                                     CP/M-86  V1.1
                                Patch 01, BDOS, 3/03/82 (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  CPM.SYS, CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-00900


          Change Description:

               The following  patch  procedure  modifies  CPM.SYS  for  proper 
          execution of the Chain Command Function.  (Function 47)


          Patch Procedure:

               Make a back-up copy of CPM.SYS before using  DDT-86    to  make 
          the following changes:


                  A>ddt86
                  -rcpm.sys
                    START         END
                  nnnn:0000        nnnn:397F
                  -xcs
                  CS 0000 nnnn+8  ;The effect of the register
                  DS 0000 nnnn+8  ;change is to set all segment
                  SS 0040 nnnn+8  ;registers to the beginning of
                  ES 0000 nnnn+8  ;the program. (above the base page)
                  IP 0000
                  -a21e6
                  nnnn+8 21E6 stosb
                  nnnn+8 21E7 or al,al
                  nnnn+8 21E9 jz 21ed
                  nnnn+8 21EB .
                  -a21f1
                  nnnn+8 21F1 pop ds
                  nnnn+8 21F2 mov [000a],al
                  nnnn+8 21F5 .
                  -wcpm.sys
                  -^c
                  A>


               Or, you can assemble  the  following  code  file  (F47.A86)  to 
          create  F47.H86.  Then,  concatenate CPM.H86, TBIOS.H86, and F47.H86 
          using the following PIP command:

                  A>PIP CPMX.H86=CPM.H86,TBIOS.H86,F47.H86



          All Information Presented Here is Proprietary to Digital Research

                                          1



          CP/M-86 V1.1                                             Patch 01


               Next, create a new command  (.CMD)  file  using  the  following 
          GENCMD command line:

                  A>GENCMD CPMX 8080 code[a40].

               Then, rename the new CPMX.CMD file CPM.SYS using the  following 
          commands:

                  ERA CPM.SYS
                  REN CPM.SYS=CPMX.CMD


          F47.A86 Code File


                  Title   'F47 - Patch for CPM-86 Function'

                  Patch_1 Equ     21E6H           ; Location of first patch
                  Patch_2 Equ     21F1H           ; Location of second patch

                  F472    Equ 21EDH
                                  
                  CCp_buff_len    Equ     Byte ptr .0AH

                          Cseg    $
                          Org     F472
                  Func472:
                          Org     Patch_1

                          Stosb
                          Or      Al, Al
                          Jz      Func472


                          Org     Patch_2

                          Pop     Ds
                          Mov     CCp_Buff_len, Al

                          End


          Function 47 TEST

               The following program can be used  to  test  the  patch.   DDT-
          86.CMD and ED.CMD must be on your default drive to run the test.











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                                          2



          CP/M-86 V1.1                                             Patch 01


          Title   'Function 47 test'
          Cseg
          ;
          ; This routine causes a chain to DDT-86

          Chain   Equ     2FH                           ; Function 47
          Bdos    Equ     0E0H                          ; Bdos entry
          Dseg
                  Org     80H
          Default_Dma_buffer      Rb 80H

          File_name       Db      'DDT86 Ed', 0H

          Cseg    $

                  Cld
                  Mov     Si, Offset File_name          ; Mov File name into
                  Mov     Di, Offset Default_Dma_Buffer ; Default dma buffer
                  Mov     Cx, Length File_name + 1
                  Push    ES
                  Mov     Ax, Ds
                  Mov     Es, Ax

                  Rep     Movsb

                  Pop     Es
                  Mov     Cl, Chain                     ; Chain to program
                  Int     Bdos
                  End


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.
























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                                          3






                                    CP/M-86   V1.1 
                               Patch 02, LDCOPY, 3/08/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.


          Program:  LDCOPY.A86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-00900


          Error Description:

               LDCOPY does not write the loader to the destination disk with a 
          track buffered BIOS.


          Patch Procedure:

               Change the distributed assembly file of the load  copy  program 
          according  to the following procedure.  Instructions are modified in 
          the Write routine.


               1) Locate the label trysec:.
               2) Locate the instruction just after the label jz tryread.
               3) Add the following code:


                       mov        cl, 00
                       mov        ax, track
                       inc        ax
                       cmp        ax, nlt
                       jne        normal_write

                       mov        ax, sector
                       inc        ax
                       cmp        ax, spt 
                       jne        normal_write
                       mov        cl, 01
                  Normal_Write:
                          .
                          .
                          .


               4) Locate the beginning of the code segment, for example, Cseg.  
               5) Locate the copyright notice: (copyright  (c)  1981,  Digital 
                  Research).
               6) Just after the copyright, add:






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                                          1



          CP/M-86 V1.1                                             Patch 02


                  rs      100H                    ;emergency patch area
                  .
                  .
                  .



               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.
















































          All Information Presented Here is Proprietary to Digital Research

                                          2






                                    CP/M-86   V1.1 
                                Patch 03, GENDEF, 4/8/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  GENDEF.CMD
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               This  patch  corrects  the  GENDEF.CMD  program  to  parse  the 
          parameters in the command tail.


          Patch Procedure:

               Make a back-up copy of GENDEF.CMD before using DDT-86   to make 
          the following changes:


                  A>ddt86
                  DDT86 1.1
                  -rgendef.cmd
                    START      END
                  NNNN:0000 NNNN:25FF
                  -xcs
                  CS 0000 nnnn+8     ; The effect of the register
                  DS 0000 nnnn+8     ; change is to set all segment
                  SS 0040 nnnn+8     ; registers to the beginning of
                  ES 0000 nnnn+8     ; the program. ( above the base page)
                  IP 0000 .
                  -aede
                  NNNN+8:0EDE mov bx, 06d
                  NNNN+8:0EE1 cmp byte [bx], 24
                  NNNN+8:0EE4 nop
                  NNNN+8:0EE5 nop
                  NNNN+8:0EE6 .
                  -aefb
                  NNNN+8:0EFB mov bx, 06d
                  NNNN+8:0EFE mov al, [bx+si]
                  NNNN+8:0F00 nop
                  NNNN+8:0F01 nop
                  NNNN+8:0F02 .
                  -wgendef.cmd
                  -^c


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.



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                                          1






                                    CP/M-86   V1.1 
                                 Patch 04, ED, 04/08/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  ED.CMD
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Change Description:

               Usually, you press CTRL-C to  interrupt  ED  commands.   If  ED 
         g  the  command  before the CTRL-C is pressed, ED 
          aborts causing termination of the edit session.  The following patch 
          procedure modifies ED to allow interruption of commands using CTRL-Y 
          instead of CTRL-C.


          Patch Procedure:

               Make a back-up copy of ED.CMD before using DDT-86   to make the 
          following changes:


                  A>ddt86
                  -red.cmd
                    START          END
                  nnnn:0000     nnnn:23ff
                  -xcs
                  CS 0000 nnnn+8
                  DS 0000 nnnn+8
                  SS 0000 nnnn+8
                  ES 0000 nnnn+8
                  -lbd1,bd3
                  yyyy:0BD1 CMP    AL,03
                  yyyy:0BD3 JNZ    0BD9
                  -sbd2
                  yyyy:0BD2 03 19
                  yyyy:0BD3 75 .
                  -s79
                  yyyy:0079 30 31
                  yyyy:007A 36 .
                  -wed.cmd
                  -^c
                  A>


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.




          All Information Presented Here is Proprietary to Digital Research

                                          1





                                     CP/M-86   V1.1 
                                 Patch 05, ED, 04/08/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  ED.CMD
          Products and Serial Numbers Affected:  CP/M-86    V1.1  C86-000-00746 
          through C86-000-01001


          Change Description:

               Use the ED command,  0X<filename>,  to  delete  files.   If  the 
          command  is  used  with  a  filename that does not exist, however, ED 
          prints the message, BREAK "O" AT ^Z, and interrupts any macro command 
          being  processed.  The  following patch procedure modifies ED to omit 
          the interruption of macro commands and the error message display.


          Patch Procedure:

               Make a back-up copy of ED.CMD before using DDT-86   to make  the 
          following changes:

                  A>ddt86
                  -red.cmd
                    START          END
                  nnnn:0000     nnnn:23ff
                  -xcs
                  CS 0000 nnnn+8
                  DS 0000 nnnn+8
                  SS 0000 nnnn+8
                  ES 0000 nnnn+8
                  -l8e9,8f7
                  yyyy:08E9 CMP    BYTE [0259],FF
                  yyyy:08EE JNZ    08BA
                  yyyy:08F0 MOV    BYTE [03C6],4F
                  yyyy:08F5 JMP    01F7
                  -a8e9
                  yyyy:08E9 jmp 8ba
                  yyyy:08EC .
                  -f8ec,8f7,90
                  -s79
                  yyyy:0079 30 32
                  yyyy:007A 36 .
                  -wed.cmd
                  -^c
                  A>

               Licensed users are granted the right to include these changes in 
          CP/M-86 V1.1 software.




          All Information Presented Here is Proprietary to Digital Research

                                          1






                                    CP/M-86   V1.1 
                                Patch 06, BDOS, 4/23/82 (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 ASM-86 and DDT-86 are trademarks of Digital Research.


          Program:  CPM.SYS and CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               This patch modifies Functions  17  and  18  (Search  First  and 
          Search  Next)  to  return  the  directory record in the DMA address.  
          Usually, the data segment contains the  address  segment  attribute.  
          However,  in  the  following patch procedure, it is assumed that the 
          DMA buffer segment set by Function 51 (Set DMA  Base)  contains  the 
          address segment attribute.


          Patch Procedure:

               Make a back-up copy of CPM.H86 and CPM.SYS  before  making  the 
          following  changes.  Assemble  the  following  program  using ASM-86 
            .  Concatenate the program to the end of CPM.H86  and  the  TBIOS.  
          Refer  to the CP/M-86 Microcomputer Control Program System Guide for 
          concatenation instructions.  Include all previous  patches  in  this 
          concatenation.


                  Title   'Dmapatch 4/23/82'

                  Dmabase         Equ     Word ptr 24A2H
                  Patch_Area      Equ     1896H

                          Cseg
                          Org     Patch_Area

                          Mov     Es, .Dmabase

                          End


               Or, you can use DDT-86   to patch  the  CPM.SYS  file  directly 
          with the following commands:









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                                          1



          CP/M-86 V1.1                                             Patch 06


                  A>ddt86
                  DDT86
                  -rcpm.sys
                    START     END
                  NNNN:0000 NNNN:397F
                  -s1918
                  NNNN:1918 9D a2
                  NNNN:1919 24 .
                  -wcpm.sys
                  -^c
                  A>


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.










































          All Information Presented Here is Proprietary to Digital Research

                                          2






                                     CP/M-86   V1.1
                                Patch 07, BDOS, 4/21/82 (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 ASM-86 and DDT-86 are trademarks of Digital Research.


          Program:  CPM.SYS / CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               Register BH contains random data upon return from Function  12.  
          This patch forces the BDOS to return 0.


          Patch Procedure:

               Make a back-up copy of CPM.SYS and CPM.H86  before  making  the 
          following  changes.  Assemble the following program using ASM-86   .   
          Concatenate the program to the end of CPM.H86 and the TBIOS.   Refer 
          to  the  CP/M-86  Microcomputer  Control  Program  System  Guide for 
          concatenation instructions.  Include all previous  patches  in  this 
          concatenation.


                 Title    'Func12 4/21/82'
                 ;This patch sets BH to 0 when bdos returns from function 12

                  Cseg

                 Patch_Area       Equ     0B77H

                  Org     Patch_Area

                  Xor     Ax, Ax

                  End


               Or, you can use DDT-86   to patch  the  CPM.SYS  file  directly 
          using the following commands:












          All Information Presented Here is Proprietary to Digital Research

                                          1



          CP/M-86 V1.1                                             Patch 07


                  A>ddt86
                  DDT86
                  -rcpm.sys
                    START     END
                  NNNN:0000 NNNN:397F
                  -sbf7
                  NNNN:0BF7 32 33
                  NNNN:0BF8 C0 .
                  -wcpm.sys
                  -^c
                  A>


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.










































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                                          2






                                    CP/M-86   V1.1  (TS: Incorporated)
                                Patch 08, BDOS, 5/12/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 DDT-86 and SID-86 are trademarks of Digital Research.


          Program:  CPM.SYS and CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               The E command (Program Load)  in  DDT-86    or  SID-86    might 
          overwrite  part  of  DDT-86,  SID-86  or other memory locations if a 
          drive specification is part of the filespec used in the  E  command.  
          This  error  might  also  occur  if you use Function 59 with a drive 
          specification in the FCB.


          Patch Procedure:

               There are two ways to patch  the  system.  The  first  requires 
          assembly  of  the  program stub titled FUNC59P, which appears below.  
          Concatenate the assembled FUNC59P to the CPMX.H86 file,  CPMX.H86  = 
          CPM.H86   +   CBIOS.H86.   The   command   to   concatenate  is  PIP       
          CPM.H86=CPMX.H86,FUNC59P.H86.  Then, use  GENCMD  with  the  command 
          GENCMD CPMX 8080 code[a40] and rename the CPMX.CMD to CPM.SYS.


               Title      'FUNC59P'

               ;
               ; This program restores the ES reg after a call to Function 59

                  Cseg
                  Org     0E23H
                  Push    Es
                  Nop
                  Mov     .22DCH, Dx

                  Org     0F1AH
                  Jmp     Patch_area
                  Nop

                  Org     0A20H
               Patch_area:
                  Mov     .2496H, Ax
                  Pop     Es
                  Ret

                  End



          All Information Presented Here is Proprietary to Digital Research

                                          1



          CP/M-86 V1.1                                             Patch 08



               Or, you can apply the following patch using DDT-86.  The  patch 
          is  applied  below the FUNC59P program stub.  Make a back-up copy of 
          CPM.SYS before using DDT-86 to make the following changes:


                  A>ddt86
                    rcpm.sys
                      START      END
                    NNNN:0000 NNNN:397F
                   -saa0
                    NNNN:0AA0 00 a3
                    NNNN:0AA1 00 96
                    NNNN:0AA2 00 24
                    NNNN:0AA3 00 07
                    NNNN:0AA4 00 c3
                    NNNN:0AA4 00 .
                   -sea3
                    NNNN:0EA3 A1 06
                    NNNN:03A4 99 90
                    NNNN:0EA5 24 89
                    NNNN:0EA6 A3 16
                    NNNN:0EA7 DC .
                   -sf9a
                    NNNN:0F9A A3 e9
                    NNNN:0F9B 96 03
                    NNNN:0F9C 24 fb
                    NNNN:0F9D C3 90
                    NNNN:0F9E E9 .
                   -wcpm.sys
                   -^c
                  A>


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.





















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                                          2






                                    CP/M-86   V1.1 
                                Patch 09, PIP, 05/14/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  PIP.CMD
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               A problem  occurs  using  PIP  to  ambiguously  copy  archived, 
          multiextent files.  PIP copies only the last extent.


          Patch Procedure:

               Make a back-up copy of PIP.CMD before using  DDT-86    to  make 
          the following changes:


                  A>ddt86
                  DDT86 1.1
                  -rpip.cmd
                    START      END
                  nnnn:0000 nnnn:1D7F
                  -xcs
                  CS 0000 nnnn+8
                  DS 0000 nnnn+8
                  SS 0040 nnnn+8
                  ES 0000 nnnn+8          ; YYYY = nnnn+8
                  -l132A
                    YYYY:132A MOV     CL,[02B9]
                    YYYY:132E NOT     CL
                    YYYY:1330 PUSH    CX
                    YYYY:1331 CALL    13B6
                    YYYY:1334 POP     CX
                    YYYY:1335 OR      AL,CL
                    YYYY:1337 RCR     AL,1
                    YYYY:1339 JNB     1375
                    YYYY:133B MOV     BYTE [01E4],00
                  -a132a
                    YYYY:132a test byte [02b9],01
                    YYYY:132f jz 1338
                    YYYY:1331 call 13b6
                    YYYY:1334 rcr al,1
                    YYYY:1336 jnb 1375
                    YYYY:1338 xor al,al





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                                          1



          CP/M-86 V1.1                                             Patch 09


                    YYYY:133a mov [0198],al
                    YYYY:133d mov [01e4],al
                    YYYY:1340 .
                  -wpip.cmd
                  -^c


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.
















































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                                          2






                                     CP/M 86   V1.1 (TS: Incorporated)
                                Patch 10, BDOS, 5/20/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 ASM-86 and DDT-86 are trademarks of Digital Research.


          Program:  CPM.SYS and CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               CP/M-86 does not return an error indication code for an invalid 
          function  code.  This  patch  forces the BDOS to return 0FFFFH in AX 
          and BX if a function code is out of range.


          Patch Procedure:

               To patch the CPM.H86 file, assemble the following program  stub 
          with  ASM-86    and name it BADFUNC.H86.  Concatenate BADFUNC.H86 to 
          the end of the CPM.H86 file using the PIP command:

                  A>PIP CPM.H86=CPM.H86,BADFUNC.H86

          The modified CPM.H86 file replaces the original.  You  can  use  the 
          modified  CPM.H86  file with your CBIOS to build a system.  Refer to 
          the  CP/M-86  Microcomputer  Control  Program   System   Guide   for 
          information  on the organization of CPM.SYS.  Make a back-up copy of 
          CPM.SYS and CPM.H86 before making the following changes:


                  Title   'BAD FUNC NUMB 5/20/82'

                  ;
                  ; This program patches CPM86 V1.1 so it returns an 0FFFFH
                  ; in BX and AX.
                  ;
                          CSeg
                          Org     0A50H
                  Label_0:
                          Jb      OK
                          Mov     Word ptr .249bH, 0FFFFH
                          Ret
                  Ok:
                          Jmp     Label_1

                          Org     0B94H
                          Jmp     Label_0

                          Org     0B97H
                  Label_1:


          All Information Presented Here is Proprietary to Digital Research

                                          1



          CP/M-86 V1.1                                             Patch 10


                          End


               Or, you can patch the CPM.SYS file directly  using  DDT-86    .  
          Make a back-up copy of CPM.SYS before making the following changes:


                  A>ddt86
                  DDT86 1.1

                   -rcpm.sys
                      START      END
                    NNNN:0000 NNNN:397f
                   -s0ad0
                    NNNN:0AD0 44 72
                    NNNN:0AD1 65 07
                    NNNN:0AD2 63 c7
                    NNNN:0AD3 65 06
                  NNNN:0AD4 6D 9b
                    NNNN:0AD5 62 24
                    NNNN:0AD6 65 ff
                    NNNN:0AD7 72 ff
                    NNNN:0AD8 20 c3
                    NNNN:0AD9 32 e9
                    NNNN:0ADA 38 3b
                    NNNN:0ADB 20 01
                    NNNN:0ADC 38 .
                   -s0c14
                    NNNN:0C14 72 e9
                    NNNN:0C15 01 b9
                    NNNN:0C16 C3 fe
                    NNNN:0C17 8A .
                   -wcpm.sys
                  -^c


               Licensed users are granted the right to include  these  changes 
          in CP/M-86 V1.1 software.



















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                                          2






                                     CP/M-86   V1.1
                                Patch 11, BDOS, 5/20/82  (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 ASM-86 and DDT-86 are trademarks of Digital Research.


          Program:  CPM.SYS and CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746 
          through C86-000-01001


          Error Description:

               If the system denies an absolute  memory  request,  the  system 
          does not return an error-indication code.  This patch returns 0FFFFH 
          in AX if the system denies a memory request.


          Patch Procedure:

               To patch the CPM.H86 file, assemble the following program  stub 
          using   ASM-86     and   name   the  file  PATCH11.A86.  Concatenate     
          PATCH11.A86 to the end of the CPM.H86 file using the  following  PIP 
          command:

                  A>PIP CPM.H86=CPM.H86,PATCH11.H86

          The modified CPM.H86 file replaces the original.  Use  CPM.H86  with 
          your  CBIOS  to  build a system.  Refer to the CP/M-86 Microcomputer 
          Control Program System Guide for information on the organization  of W 
          the CPM.SYS file.


              Title 'Patch11 5/20/82'

              Loaderr_loc Equ    0F1EH   ;Addr of load error routine
              Load59_Ret  Equ    0F06H   ;Exit from load error routine
              Pat_offset  Equ    0A30H   ;Patch area

              User_Parm_Seg       Equ    02323H  ;User's data segment
              Aret                Equ    0249BH  ;Return value
              Param_Seg   Equ    0249DH  ;User's data segment at entry

                  Cseg

                  Org     Pat_Offset

              Patch:
                  Mov     Ax, .User_Parm_Seg
                  Mov     .Param_seg, Ax
                  Mov     Word ptr .Aret, 0FFFFH
                      Jmp     loadret



          All Information Presented Here is Proprietary to Digital Research

                                          1



          CP/M-86 V1.1                                             Patch 11


                  Org     Load59_ret
              loadret:
                  Org     Loaderr_loc
                  Jmp     Patch

                  End


               Or,  you  can  patch  your  CPM.SYS  file  directly  using  the 
          following  DDT-86   commands.  Make a back-up copy of CPM.SYS before 
          making the following changes:


                  A>ddt86
                    DDT86 1.1
                   -rcpm.sys
                      START      END
                    NNNN:0000  NNNN:397F
                   -sab0
                    NNNN:0AB0 00 a1
                    NNNN:0AB1 00 23
                    NNNN:0AB2 00 23
                    NNNN:0AB3 00 a3
                    NNNN:0AB4 00 9d

                                     CP/M-86   V1.1
                               Patch 12, SUBMIT, 5/24/82 (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.


          Program:  SUBMIT.COM
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746      This patch modifies the SUBMIT utility to enable execution fromtch Procedure:

               Make a back-up copy of SUBMIT.COM before using DDT-86   to makees:


                  A>ddt86
                    DDT86 1.1
                   -rsubmit.cmd
                       START    END
                    nnnn:0000 nnnn:0F7F
                   -aa2
                    nnnn:00A2 mov dl,ff     ;instruction was mov dx,00h
                    nnnn:00A4 nop
                    nnnn:00A5 .
                   -wsubmit.cmd





                                     CP/M-86   V1.1
                                Patch 13, BDOS, 06/08/82 (TS: Incorporated)

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                 ASM-86 and DDT-86 are trademarks of Digital Research.


          Program:  CPM.H86 and CPM.SYS
          Products and Serial Numbers Affected:   CP/M-86    V1.1  0-000-00000

               An area of memory  can  be  overwritten  when  a  user  programram Load).


          Patch Procedure:

               To patch the  CPM.H86  file,  type  the  program  stub  on  the         following  page into a file named PATCH13.A86.  Assemble PATCH13.A86  Concatenate  PATCH13.H86  toIP CPM.H86=CPM.H86,PATCH13.H86

               The newly modified CPM.H86 file replaces the original  and  can used  with  your  CBIOS to build a system.  Refer to the CP/M-86formation  on  they modifications.


                  Title   'PATCH13 6/8/82'
                  ;
                  ; An area of memory may be overwritten when a
                  ; user program executes a Function 59 (program load).

                  Patch_Area      Equ     0A00H
                  Bdos            Equ     00E0H

                          Cseg

                          Org     Patch_Area

                  Start_Patch:

                          Mov     Cs:byte ptr .2498H, 01

                          Push    Ax
                          Mov     Ah, Cs:.2327H
                          Mov     Al, Cs:.2313H
                          Push    Ax
                          Int     Bdos

                          Pop     Ax
                          Mov     Cs:.2313H, Al
                          Mov     Cs:.2327H, Ah
                          Pop     Ax

                          Ret
                          Nop

                          Org     0C42H

                          Jmp     Start_Patch

                          Nop
                          Nop
                          Nop
                          Nop
                          Nop
                          Nop

                          End


               Or, you can patch your CPM.SYS file directly using DDT-86    . ng the following changes:


                  A>ddt86
                    DDT86 1.1
                   -rcpm.sys
                     START       END
                    NNNN:0000   NNNN:397F
                   -aa80
                    NNNN:0A80 cs: mov byte [2498], 01
                    NNNN:0A86 push ax
                    NNNN:0A87 cs: mov ah, [2327]
                    NNNN:0A8C cs: mov al, [2313]
                    NNNN:0A90 push ax
                    NNNN:0A91 int 0e0
                    NNNN:0A93 pop ax
                    NNNN:0A94 cs: mov [2313], al
                    NNNN:0A98 cs: mov [2327], ah
                    NNNN:0A9D pop ax
                    NNNN:0A9E ret
                    NNNN:0A9F nop
                    NNNN:0AA0 .
                   -acc2
                    NNNN:0CC2 jmp 0A80
                    NNNN:0CC5 nop
                    NNNN:0CC6 nop
                    NNNN:0CC7 nop
                    NNNN:0CC8 nop
                    NNNN:0CC9 nop
                    NNNN:0CCA nop
                    NNNN:0CCB .
                   -wcpm.sys
                   -^c


                                     CP/M-86   V1.1
                              Patch 14, TRACK.A86, 8/1/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       ASM-86 is a trademark of Digital Research.
                                 Compiled October 1982


          Program:  TRACK.A86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-007460


          Error Description:

               Assembling TRACK.A86 produces a  syntax  error  because  of  an  improper ASM-86   directive.


          Patch Procedure:

               Make a back-up copy of  TRACK.A86.   Install  this  patch  with          : *#a <cr>
                      1: *214:15t <cr>
                    214:          dseg
                    215:
                    216:  cpm_disk        rb      1
                    217:  cpm_track       rw      1
                    218:  cpm_sec         rw      1
                    219:
                    220:  dma_longword    rd      1
                    221:                  org     dma_longword
                    222:  dma_offset      rw      1
                    223:  dma_segment     rw      1
                    224:
                    225:  cur_disk        rb      1
                    226:  cur_sec         rw      1
                    227:  cur_track       rw      1
                    228:  cur_dma         rw      1
                    214: *220:2k <cr>
                    220: *222:i <cr>
                    222:  dma_longword    equ dword ptr dma_offset
                    223: ^z <cr>
                    224: *214:15t <cr>
                    214:        dseg
                    215:
                    216:  cpm_disk        rb      1
                    217:  cpm_track       rw      1
                    218:  cpm_sec         rw      1
                    219:  
                    220:  dma_offset      rw      1
                    221:  dma_segment     rw      1
                    222:  dma_longword    equ dword ptr dma_offset
                    223:
                    224:  cur_disk        rb      1
                    225:  cur_sec         rw      1
                    226:  cur_track       rw      1
                    227:  cur_dma         rw      1
                    228:
                    214: *e <cr>
                  A>
           


                                     CP/M-86   V1.1
                                Patch 15, BDOS, 11/19/82

                          Copyright   1982 by Digital Research
                 CP/M-86 is a registered trademark of Digital Research.
                       DDT-86 is a trademark of Digital Research.
                                 Compiled December 1982


          Program:  CPM.SYS, CPM.H86
          Products and Serial Numbers Affected:  CP/M-86   V1.1  C86-000-00746scription:

               The BDOS does not load a file with  absolute  requirements  forRA or STACK segments.


          Patch Procedure:

               Make a back-up copy of CPM.SYS before you use DDT-86   to  makeWm.sys
                    START      END
                  nnnn:0000  nnnn:xxxx             (note the value of nnnn)
                  -hnnnn,8
                  nnnn+8 nnnn-8                  (note the value of nnnn+8)

                  -xcs
                  CS 0000 nnnn+8
                  DS 0000 nnnn+8
                  SS 0040 nnnn+8
                  ES 0000 nnnn+8
                  IP 0000 .
                  -add4
                  nnnn+8:0DD4 jmp 24e2
                  nnnn+8:0DD7 .
                  -a24e2
                  nnnn+8:24E2 cmp word 03[si],0000
                  nnnn+8:24E6 jz 24f2
                  nnnn+8:24E8 push ax
                  nnnn+8:24E9 mov ax,03[si]
                  nnnn+8:24EC mov [22d4],ax
                  nnnn+8:24EF pop ax
                  nnnn+8:24FO jmps 24f5
                  nnnn+8:24F2 mov [22d4],ax
                  nnnn+8:24F5 jmp 0dd7
                  nnnn+8:24F8 .
                  -wcpm.sys
                  -^C
                  A>

               Or, you can assemble the following code file  (PATCH15.A86)  tooncatenate PATCH15.H86 to the end of theM.H86=CPM.H86,PATCH15.H86

               The newly modified CPM.H86 file replaces the original  and  can with your CBIOS to build a system.  Refer to Section 7.2 into study  theodifications.


                  ;
                  ;  The BDOS does not properly load a CMD file with absolute
                  ;  load addresses specified in the header record for EXTRA
                  ;  and/or STACK segments.

                  Patch_area          equ       24E2h
                  Jmp_point           equ       0DD4h
                  Patch_return        equ       0DD7h
                  Pag0                equ       word ptr .22D4h
                  Abs                 equ       word ptr 3

                           CSEG

                           org        jmp_point
                           jmp        patch

                           CSEG

                           org        patch_return
                  Patch_ret:

                           CSEG

                           org        patch_area
                  Patch:
                           cmp        abs[si],0 ! jz from_ax
                           push       ax
                           mov        ax,abs[si]
                           mov        pag0,ax
                           pop        ax
                           jmps       end_patch
                  From_ax:
                           mov        pag0,ax
                  End_patch:
                           jmp        patch_ret

                           end


               Licensed users are granted the right to include  these  changesed Here is Proprietary to Digital Research

