/[gxemul]/trunk/src/promemul/pc_bios.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /trunk/src/promemul/pc_bios.c

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revision 14 by dpavlin, Mon Oct 8 16:18:51 2007 UTC revision 24 by dpavlin, Mon Oct 8 16:19:56 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2005  Anders Gavare.  All rights reserved.   *  Copyright (C) 2005-2006  Anders Gavare.  All rights reserved.
3   *   *
4   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
5   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: pc_bios.c,v 1.2 2005/09/30 14:17:04 debug Exp $   *  $Id: pc_bios.c,v 1.6 2006/03/30 19:41:51 debug Exp $
29   *   *
30   *  Generic PC BIOS emulation.   *  Generic PC BIOS emulation.
31   *   *
# Line 878  static void pc_bios_int13(struct cpu *cp Line 878  static void pc_bios_int13(struct cpu *cp
878                          }                          }
879    
880                          debug("[ pc_bios_int13(): %s biosdisk 0x%02x (offset="                          debug("[ pc_bios_int13(): %s biosdisk 0x%02x (offset="
881                              "0x%llx) mem=0x%04x:0x%04x ]\n", ah==2? "read from"                              "0x%"PRIx64") mem=0x%04x:0x%04x ]\n", ah==2?
882                              : "write to", dl, (long long)offset,                              "read from" : "write to", dl, (uint64_t) offset,
883                              cpu->cd.x86.s[X86_S_ES], bx);                              cpu->cd.x86.s[X86_S_ES], bx);
884    
885                          if (ah == 3) {                          if (ah == 3) {
# Line 897  static void pc_bios_int13(struct cpu *cp Line 897  static void pc_bios_int13(struct cpu *cp
897                          if (!res) {                          if (!res) {
898                                  err = 4;                                  err = 4;
899                                  fatal("[ pc_bios_int13(): FAILED to %s"                                  fatal("[ pc_bios_int13(): FAILED to %s"
900                                      " biosdisk 0x%02x (offset=0x%llx)"                                      " biosdisk 0x%02x (offset=0x%"PRIx64")"
901                                      " ]\n", ah==2? "read from" :                                      " ]\n", ah==2? "read from" :
902                                      "write to", dl, (long long)offset);                                      "write to", dl, (uint64_t) offset);
903                          } else if (ah == 2) {                          } else if (ah == 2) {
904                                  cpu->cd.x86.cursegment = X86_S_ES;                                  cpu->cd.x86.cursegment = X86_S_ES;
905                                  if (bx + 512*al > 0x10000) {                                  if (bx + 512*al > 0x10000) {
# Line 1330  static void pc_bios_int1a(struct cpu *cp Line 1330  static void pc_bios_int1a(struct cpu *cp
1330  static void pc_bios_int1c(struct cpu *cpu)  static void pc_bios_int1c(struct cpu *cpu)
1331  {  {
1332          unsigned char ticks[4];          unsigned char ticks[4];
1333          int i;          size_t i;
1334    
1335          /*  Increase word at 0x0040:0x006C  */          /*  Increase word at 0x0040:0x006C  */
1336          cpu->memory_rw(cpu, cpu->mem, 0x46C,          cpu->memory_rw(cpu, cpu->mem, 0x46C,
# Line 1484  void pc_bios_init(struct cpu *cpu) Line 1484  void pc_bios_init(struct cpu *cpu)
1484  {  {
1485          char t[81];          char t[81];
1486          int x, y, nboxlines, i, any_disk = 0, disknr, tmp;          int x, y, nboxlines, i, any_disk = 0, disknr, tmp;
1487            int old_cursegment = cpu->cd.x86.cursegment;
1488          int boot_id, boot_type, bios_boot_id = 0, nfloppies = 0, nhds = 0;          int boot_id, boot_type, bios_boot_id = 0, nfloppies = 0, nhds = 0;
1489    
1490          /*  Go to real mode:  */          /*  Go to real mode:  */
# Line 1781  void pc_bios_init(struct cpu *cpu) Line 1782  void pc_bios_init(struct cpu *cpu)
1782          cpu->pc = 0x7c00;          cpu->pc = 0x7c00;
1783    
1784          cpu->machine->md.pc.initialized = 1;          cpu->machine->md.pc.initialized = 1;
1785    
1786            cpu->cd.x86.cursegment = old_cursegment;
1787  }  }
1788    
1789    
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