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d -^c 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 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. All Information Presented Here is Proprietary to Digital Research 2 CP/M-86 V1.1 Patch 11, 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: 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 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 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-86 information 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 using 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 YY: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 All Information Presented Here is Proprietary to Digital Research 1 CP/M-86 V1.1 Patch 09 YYYY:133a mov [0198],al YYYY:133d mov [01e4],al YYYY:1340 . -wpip.cm CP/M-86..V1.1 for the IBM..Displaywriter Application Note 01, 9/1/83 Nonstandard Printer Page Lengths Copyright 1983 by Digital Research Inc. CP/M-86 is a registered trademark of Digital Research Inc. IBM is a registered trademark of International Business Machines. Compiled September 1983 Program: BIOS (Basic Input/Output System) Applicable products and version numbers: CP/M-86 R1.1 (DW), maintenance release 1.10 The SETUP.CMD program, distributed with CP/M-86 R1.1 for the IBM. Displaywriter (maintenance release 1.10), provides the user with three alternative page length choices when configuring the system for a specific IBM printer, paper-feed method, and paper length. A lengths of 0, 66, or 88 lines per page can be selected, a length of 0 implying that the BIOS is to do no line counting. The file CPM.SYS may be altered with the following procedure to allow other than the default line lengths. Use DDT86.CMD, the debugging program included with CP/M-86 DW, to change one or two bytes in the file. These bytes contain binary numbers corresponding to the assumed number of lines per page when 66 lpp is chosen from the SETUP menu, or 88 lpp is selected. Before proceeding, determine the values other than 66 or 88 you would like to set and convert that number to a 2-digit hexadecimal value. For instance, a page length of 58 lines would convert to 3A in the hexadecimal base. A page length of 64 equals 40 hex. The following example below changes the 66 lpp option to 58. The 88 lpp setting is chosen to remain at 88. The address corresponding to the 66-lpp byte is 4640 (hex) and the address corresponding to the 88-lpp byte is 4641 (hex). Make sure you have an unmodified back-up copy of CPM.SYS before executing the following commands. User entries are in bold type, and comments follow semicolons. The files CPM.SYS, DDT86.CMD, and STAT.CMD must be present on the diskette in drive A. Replace the 3A and 58 entries with your chosen page lengths. A>stat cpm.sys rw A:CPM .SYS set to Read Write (RW) A>ddt86 DDT86 1.1 -rcpm.sys START END xxxx:yyyy xxxx:zzzz ;these 4-digit numbers will vary -s4640 xxxx:4640 42 3a ;4640 is the address for 66 lpp xxxx:4641 58 58 ;4641 is the address for 88 lpp xxxx:4642 DC . ;a period exits from s mode -wcpm.sys ;overwrite the old file with the new -^c ;code-c on the Displaywriter A>stat cpm.sys ro A:CPM .SYS set to Read Only (RO) A> The new lines-per-page values take effect on the next cold-start (when "code-end" is typed or when the machine is cycled off then on). Thereafter, when dealing with this copy of CPM.SYS, the newly chosen page-lengths take effect when the 66- or 88-lines option has been chosen from within the SETUP program. Licensed users are granted the right to include these modifications in their Digital Research software. CP/M-86..R1.1 for the IBM..Displaywriter Application Note 02, 9/1/83 Keyboard Customization Copyright 1983 by Digital Research, Inc. CP/M-86 is a registered trademark of Digital Research Inc. DDT-86 is a trademark of Digital Research Inc. IBM is a registered trademark of International Business Machines. Compiled September 1983 Applicable products and version numbers: CP/M-86 R1.1, maintenance release 1.10 for the IBM. Displaywriter The BIOS section of the operating system, contained in the disk file CPM.SYS, contains a translate table to convert the hardware- generated keyboard codes to the ASCII characters that CP/M-86 uses. Several of the keys go unused by CP/M-86, and the operating system normally ignores any input they generate. However, with the following instructions, you can redefine these keys to produce any desired ASCII character. You should have access to a standard ASCII character chart. In addition to the 11 keys that you may define, the codes generated by the uppercase period and the uppercase comma may also be customized. The unused keys that you may redefine are contained in two separate key groups on the keyboard. The first is the 10-key group on the extreme left; this group is 2 keys wide by 5 rows. The second is the 8-key group in the upper right area of the keyboard; this group is 4 keys wide by 2 rows. The following figure shows these key groups: +---+---+ +---------------------------------+ +---+---+---+---+ | | | | | | | E | F | G | +---+---+ | ++ +---+---+---+---+ | | A | | | | H | I | J | K | +---+---+ | | +---+---+---+---+ | | | | | +---+---+ | | +---+---+---+---+ | B | C | | | | | +---+---+ | | + + | D | | +----+ +-----+ | | +---+---+ | | +---+---+---+---+ +---------------------+ Figure 1-1. Redefinable Keyboard Keys You may redefine any or all of the keys labeled A-K in Figure 1-1, as well as the uppercase period and comma. Note: The letters A-K in the figure and in the following table do not correspond the keys labeled A-K on the DW keyboard. They apply only to the keys referenced in the figure. Each key has associated with it two particular hexadecimal addresses within the CPM.SYS file, corresponding to the two ASCII codes which are generated when the key is pressed with and without the shift or caps lock in effect. These addresses are tabulated in the following table: Table 1-1. Keyboard Hexadecimal Addresses Key Address Address When key is not shifted When key is shifted A 4AD1 4AD2 B 4ACF 4AD0 C 4AED 4AEE D 4AD5 4AD6 E 4AD7 4AD8 F 4AB5 4AB6 G 4AEF 4AF0 H 4AB7 4AB8 I 4AB9 4ABA J 4ABB 4ABC K 4ABD 4ABE , N/A 4A04 . N/A 4A06 The following example demonstrates how to define key B, in Figure 1- 1, to cause it to generate the < character (ASCII code = 3C hex) when shifted and unshifted; key C, in Figure 1-1, to generate the > character (3E hex) when shifted and unshifted; and key G, in Figure 1-1, to generate the ASCII code for CTRL-R (12 hex) when shifted and CTRL-C (03) when unshifted. Also, the uppercase comma is redefined as < and uppercase period is redefined as >. The procedure shown in the example requires the files STAT.CMD, DDT86.CMD, and CPM.SYS to be present in drive A:. You should be familiar with the DDT-86 debugger before proceeding. See the CP/M- 86 Operating System Programmer's Guide for information on DDT-86. Note: Make absolutely certain you have an unmodified backup of the CPM.SYS file on another diskette before you customize your keyboard. User entries are in bold type. Comments follow semicolons on a line. A>stat cpm.sys rw A:CPM .SYS set to Read Write (RW) A>ddt86 DDT86 1.1 -rcpm.sys START END xxxx:yyyy xxxx:zzzz ;these 4-digit numbers will vary -s4acf xxxx:4ACF 00 3c ;key B (unshifted) to ASCII < xxxx:4AD0 00 3c ;key B (shifted) to ASCII < xxxx:4AD1 00 . -s4aed xxxx:4AED 00 3e ;key C (unshifted) to ASCII > xxxx:4AEE 00 3e ;key C (shifted) to ASCII > xxxx:4AEF 00 . -s4aef xxxx:4AEF 00 03 ;key G (unshifted) to CTRL-C xxxx:4AF0 00 12 ;key G (shifted) to CTRL-R xxxx:4AF1 00 . -s4a04 xxxx:4A04 2C 3c ;uppercase comma to ASCII < xxxx:4A05 2E . -s4a06 xxxx:4A06 2E 3e ;uppercase period to ASCII > xxxx:4A07 2F . -wcpm.sys ;this overwrites the old CPM.SYS -^c ;code-c on the Displaywriter A>stat cpm.sys ro A:CPM .SYS set to Read Only (RO) A> The newly-programmed key codes take effect on the next cold-start (which means, after "code-end" is typed, or after the machine is cycled off then on). Replace the CPM.SYS files on other system disks with the newly patched file to enable systems booted from other disks to generate the same key codes. This Technical Note was developed and tested by DRI Technical Support using standard DRI products. Modifications required to compile and execute under nonstandard or non-DRI products are the responsibility of the user, as are modifications specific to a given application. DRI specifically disclaims any express or implied warranty and shall not be liable for any loss of profits, loss of business, loss of use or of data, interruption of business, nor for indirect, special, incidental, or consequential damages of any kind caused by the use or adaptation of this application note. Licensed users are granted the right to include these modifications in their Digital Research software. a segment at entry Cseg Org Pat_Offset Patch: Mov Ax, .User_Parm_Seg Mov .Param_seg, Ax Mov Word ptr .Aret, 0FFFFH 0 0800 0100 C8FF #S645 0645 0D 0E 0646 00 . #WSAVE.COM 000Eh record(s) written. #G0 A>