Project cleanup
This commit is contained in:
Jeff Parsons
parent
1a0b930636
commit
317aea074e
6 changed files with 6 additions and 235 deletions
3
.gitignore
vendored
3
.gitignore
vendored
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@ -11,10 +11,13 @@
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.settings
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.sass-cache
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_site
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Gemfile.lock
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node_modules
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/videos
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/web
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archive/
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c64/
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ecp/
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private/
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src/
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tmp/
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@ -1,166 +0,0 @@
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/* CPQPATCH 1.0 by John Elliott.
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*
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* Patches the BIOS ROM of the Compaq Portable (revision C) to support
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* booting from a hard drive.
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*
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* This program is public domain.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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unsigned char rom[8192];
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#ifdef __PACIFIC__
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#define AV0 "CPQPATCH"
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#define EXIT_FAILURE -1
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#define EXIT_SUCCESS 0
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#else
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#define AV0 argv[0]
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#endif
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/* First patch: New INT19 vector */
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static unsigned char p0[] = { 0x20, 0xf8 }; /* DW 0xF820 */
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/* Second patch: Convert old INT19 into a subroutine */
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static unsigned char p1[] = { /* Enter with DH = 0 DL = drive */
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0xbb, 0x40, 0x00, /* P1: MOV BX, 0x40 ;BIOS dseg */
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0x8E, 0xDB, /* MOV DS, BX */
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0xB9, 0x03, 0x00, /* MOV CX, 0x0003 ;Try 3 times */
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0x51, /* TRY: PUSH CX ;Save count */
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0x52, /* PUSH DX ;Save drive */
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0xBB, 0x00, 0x00, /* MOV BX, 0x0000 ;Load to */
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0x8E, 0xC3, /* MOV ES, BX ;segment 0 */
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0xB4, 0x00, /* MOV AH, 0x00 ;Reset FDC */
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0xCD, 0x13, /* INT 0x13 ;BIOS disk */
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0x5A, /* POP DX ;Get drive */
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0x52, /* PUSH DX ;Save again */
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0xBB, 0x00, 0x7C, /* MOV BX, 0x7C00 ;Load addr */
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0xB9, 0x01, 0x00, /* MOV CX, 0x0001 ;Cyl 0 sec 1 */
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0xB8, 0x01, 0x02, /* MOV AX, 0x0201 ;Read sector */
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0xCD, 0x13, /* INT 0x13 ;BIOS disk */
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0x5A, /* POP DX ;drive */
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0x59, /* POP CX ;count */
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0x73, 0x03, /* JNC OK ;It worked */
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0xE2, 0xE2, /* LOOP TRY ;Retry */
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0xF9, /* STC ;It failed */
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0xC3, /* RET */
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0x00, 0x00, 0x00, 0x00, /* ;Unused */
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};
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/* Third patch: New INT19 entry point. This replaces an unused area. */
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static unsigned char p2[] = {
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0xfb, /* STI */
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0xBA, 0x00, 0x00, /* TR2: MOV DX, 0x0000 ;Floppy */
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0xE8, 0xCB, 0xEE, /* CALL P1 ;Try it */
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0x73, 0x0B, /* JNC GO ;It worked! */
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0xB2, 0x80, /* MOV DL, 0x80 ;Hard drive */
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0xE8, 0xC4, 0xEE, /* CALL P1 ;Try it */
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0x73, 0x04, /* JNC GO ;It worked! */
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0xCD, 0x20, /* INT 0x20 ;See below */
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0xEB, 0xED, /* JMPS TR2 ;Loop forever*/
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0xEA, 0x00, 0x7C, /* GO: JMPF 0x0000:0x7C00 ;Go to sector*/
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0x00, 0x00,
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0x00, /* DB 0 ;word align */
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0xEC, 0x7E, /* DW 07EECh ;checksum */
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0x00, 0x00, 0x00, 0x00, /* ;Unused */
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/* Note on the INT 0x20: This is not 'program termination' at boot time. The
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* Compaq BIOS hooks it and uses it to display the message:
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*
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* Diskette error
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* Replace and strike any key when ready
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*
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*/
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};
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void patch()
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{
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memcpy(rom + 0x0376, p0, sizeof(p0));
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memcpy(rom + 0x06f2, p1, sizeof(p1));
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memcpy(rom + 0x1820, p2, sizeof(p2));
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}
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unsigned short checksum()
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{
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unsigned short total, cur;
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int n;
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total = 0;
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for (n = 0; n < 8192; n++)
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{
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cur = rom[n];
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++n;
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cur |= (((unsigned short)rom[n]) << 8);
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total += cur;
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}
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return total;
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}
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int main(int argc, char **argv)
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{
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FILE *fp;
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unsigned short sum;
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if (argc < 3)
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{
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fprintf(stderr, "Syntax: %s old_rom new_rom\n\n"
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/* 1...5...10...15...20...25...30...35...40*/
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"Patches the BIOS ROM of the Compaq\n"
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"Portable (revision C) to support booting\n"
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"from a hard drive.\n\n"
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"This program is public domain.", AV0);
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return EXIT_SUCCESS;
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}
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fp = fopen(argv[1], "rb");
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if (!fp)
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{
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perror(argv[1]);
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return EXIT_FAILURE;
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}
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if (fread(rom, 1, sizeof(rom), fp) < (int)sizeof(rom))
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{
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fprintf(stderr, "Could not read 8k from %s\n", argv[1]);
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fclose(fp);
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return EXIT_FAILURE;
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}
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fclose(fp);
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if (memcmp(rom + 0x1FEA, "COMPAQ", 6))
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{
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fprintf(stderr, "COMPAQ signature not found in %s\n", argv[1]);
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return EXIT_FAILURE;
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}
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if (rom[0x1FE6] != 'C')
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{
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fprintf(stderr, "ROM revision is not C. This may not work.\n");
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}
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sum = checksum();
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if (sum != 0)
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{
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fprintf(stderr, "ROM checksum is 0x%04x (should be 0). This "
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"may not work.\n", sum);
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}
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patch();
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sum = checksum();
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if (sum != 0)
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{
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fprintf(stderr, "New checksum is 0x%04x (should be 0). This "
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"may not work.\n", sum);
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}
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fp = fopen(argv[2], "wb");
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if (!fp)
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{
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perror(argv[2]);
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return EXIT_FAILURE;
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}
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if (fwrite(rom, 1, sizeof(rom), fp) < (int)sizeof(rom))
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{
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fprintf(stderr, "Could not write 8k to %s\n", argv[2]);
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fclose(fp);
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return EXIT_FAILURE;
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}
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fclose(fp);
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return EXIT_SUCCESS;
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}
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Binary file not shown.
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@ -1,67 +0,0 @@
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CPQPATCH v1.0 12 August 2008, John Elliott
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=============================================================================
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CPQPATCH patches the BIOS ROM of a Compaq Portable so that it can boot from
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a hard drive whose own ROM doesn't support booting an XT.
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To explain a little:
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- On the original PC and XT, the BIOS ROM doesn't know anything about hard
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drives. The hard drive controller comes with its own ROM, and this handles all
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aspects of the drives, including booting from them.
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- On AT-class machines, the BIOS ROM does know about hard drives, and supports
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ATA drives itself. Additional hard drive controllers (eg: SCSI) can get away
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with just adding the drives to the system; the BIOS handles booting.
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So, I had a Compaq portable, and an add-on drive for it (2Mb of flash on an
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ISA card) which left booting up to the BIOS. The attached program will patch
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the revision C ROM so that it will boot from my add-on drive. It should also
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work with the Future Domain TMC-850 (firmware 8.4 or 8.5).
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The C source (cpqpatch.c) includes the assembly language source code for
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the changes made.
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To use CPQPATCH:
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~~~~~~~~~~~~~~~~
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You will need:
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* A Compaq Portable
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* An EPROM burner
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* A 2764 EPROM, 28c64 EEPROM, or compatible chip.
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1. Get hold of a Compaq Portable BIOS image (revision C). This should be an 8k
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file. If you have a Portable, you can check the BIOS revision with DEBUG:
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A>DEBUG
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-DFFFE:6,f
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FFFE:0006 43 20 20 20 43 4F 4D 50 51 51 C COMPAQ
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-
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The 'C' by itself is the revision number.
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Either save the ROM with DEBUG, or image it once you've dismantled the PC.
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2. Take the motherboard out of the Portable.
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3. Remove the BIOS ROM. This should be marked 100666-1 (or 1006661) and be
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plugged into a socket near the DIP switches. If you haven't imaged it, do so
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now.
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4. Run CPQPATCH:
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CPQPATCH bios.bin new.bin
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where "bios.bin" is the original BIOS, and "new.bin" is the name you want to
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give to the patched version.
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5. Burn "new.bin" to an EPROM or EEPROM.
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6. Put that EPROM/EEPROM in the socket where the BIOS ROM came from. The
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silkscreening on the board should show you which way round it goes, but in
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case it doesn't, the end with the notch should point in the direction of the
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ISA slots.
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7. Put the whole thing back together, power it up, and hope it works.
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3
logs/.gitignore
vendored
3
logs/.gitignore
vendored
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@ -1,4 +1,5 @@
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*.json
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*.log
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bugs.html
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users/
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aws/
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users/
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@ -1,6 +1,6 @@
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Logs
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---
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This is where Node web server activity is logged, where bug reports are saved, and where per-user data is stored.
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This is where Node web server activity is logged, bug reports are saved, and per-user data is stored.
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Per-user data is still in the experimental phase, and is enabled ONLY for users that have requested and received
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their own per-user directory.
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