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Added support for Tandy 1000 HX and SL/2. As part of this commit :

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- FDC now selects drive number from DOR (0x3f2)
- FDC now fails seeks on drives > 1
- XT systems no longer have BIOS mapping at E0000-EFFFF
- SN76489 now distinguishes between SN76496 (PCjr and early Tandy 1000), NCR8496 (later Tandy 1000 - different noise handling) and PSSJ
- Removed redundant limits on memory configuration - allows selection of 768k for Tandy 1000 SL/2
This commit is contained in:
TomW 2015-12-03 21:48:10 +00:00
commit 2ca86ba028
24 changed files with 1420 additions and 64 deletions
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34
src/mem.c
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@ -163,6 +163,29 @@ int loadbios()
fclose(f);
mem_load_xtide_bios();
return 1;
case ROM_TANDY1000HX:
f = romfopen("roms/tandy1000hx/v020000.u12", "rb");
if (!f) break;
fread(rom, 0x20000, 1, f);
fclose(f);
biosmask = 0x1ffff;
mem_load_xtide_bios();
return 1;
case ROM_TANDY1000SL2:
f = romfopen("roms/tandy1000sl2/8079047.hu1" ,"rb");
ff = romfopen("roms/tandy1000sl2/8079048.hu2","rb");
if (!f || !ff) break;
fseek(f, 0x30000/2, SEEK_SET);
fseek(ff, 0x30000/2, SEEK_SET);
for (c = 0x0000; c < 0x10000; c += 2)
{
rom[c] = getc(f);
rom[c + 1] = getc(ff);
}
fclose(ff);
fclose(f);
mem_load_xtide_bios();
return 1;
/* case ROM_IBMPCJR:
f=fopen("pcjr/bios.rom","rb");
fread(rom+0xE000,8192,1,f);
@ -1723,10 +1746,13 @@ void mem_set_mem_state(uint32_t base, uint32_t size, int state)
void mem_add_bios()
{
mem_mapping_add(&bios_mapping[0], 0xe0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom, MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[1], 0xe4000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x4000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[2], 0xe8000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x8000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[3], 0xec000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0xc000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
if (AT)
{
mem_mapping_add(&bios_mapping[0], 0xe0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom, MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[1], 0xe4000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x4000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[2], 0xe8000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x8000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[3], 0xec000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0xc000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
}
mem_mapping_add(&bios_mapping[4], 0xf0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x10000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[5], 0xf4000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x14000 & biosmask), MEM_MAPPING_EXTERNAL, 0);
mem_mapping_add(&bios_mapping[6], 0xf8000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (0x18000 & biosmask), MEM_MAPPING_EXTERNAL, 0);