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IBM 5550: comment out unused code

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This commit is contained in:
Akamaki
2026-02-19 11:04:37 +09:00
parent c3db241621
commit 0a4b44184a
1 changed files with 28 additions and 26 deletions
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54
src/machine/m_xt_ibm5550.c
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@@ -79,8 +79,6 @@
#define LC_INDEX 0x3D0
#define LC_DATA 0x3D1
#define LS_ENABLE 0x3D2
#define LS_DISABLE 0x3D3
#define LC_HORIZONTAL_TOTAL 0x00 /* -1 */
#define LC_HORIZONTAL_DISPLAYED 0x01
#define LC_H_SYNC_POSITION 0x02
@@ -99,6 +97,10 @@
#define LC_CURSOR_LOC_LOWJ 0x0F
#define LC_LIGHT_PEN_HIGH 0x10
#define LC_LIGHT_PEN_LOW 0x11
#define LS_ENABLE 0x3D2
#define LS_DISABLE 0x3D3
#define LS_MODE 0x3D8
#define LS_MONSENSE 0x3DA
// #define LV_PORT 0x3E8
// #define LV_PALETTE_0 0x00
// #define LV_MODE_CONTROL 0x10
@@ -396,8 +398,8 @@ epoch_out(uint16_t addr, uint16_t val, void *priv)
mem_mapping_disable(&epoch->vmap);
// mem_mapping_enable(&epoch->paritymap);
break;
case 0x3D8:
/* Bit 3: Font access in read, Bit 1: graphic mode, Bit 0: Font access in write */
case LS_MODE:
/* Bit 3: Video output enable, Bit 1: Graphic mode (switch 16 / 9 bit word in Font 16 system) */
epoch->crtmode = val;
#ifdef ENABLE_EPOCH_LOG
// epoch_dumpvram(epoch);
@@ -515,7 +517,7 @@ epoch_in(uint16_t addr, void *priv)
// // epoch_iolog("epoch In %04X(%02X) %04X %04X:%04X\n", addr, epoch->attraddr, temp, cs >> 4, cpu_state.pc);
// epoch->attrff = 0; /* reset flipflop (VGA does not reset flipflop) */
// break;
case 0x3DA:
case LS_MONSENSE:
temp = 0xff;
if (!(epoch->crtmode & 0x08)) {/* The video out is active */
if(epoch->cgastat & 8)
@@ -525,7 +527,7 @@ epoch_in(uint16_t addr, void *priv)
// temp &= 0xfe; /* color */
break;
}
if (addr != 0x3DA)
if (addr != LS_MONSENSE)
epoch_iolog("%04X:%04X epoch In %04X %04X\n", cs >> 4, cpu_state.pc, addr, temp);
return temp;
}
@@ -1208,15 +1210,15 @@ epoch_vram_read(uint32_t addr, void *priv)
return epoch->vram[addr];
}
static void
epoch_vram_writeb(uint32_t addr, uint8_t val, void *priv)
{
epoch_t *epoch = (epoch_t *) priv;
// epoch_log("%04X:%04X epoch_vwb: %x, val %x\n", cs >> 4, cpu_state.pc, addr, val);
cycles -= video_timing_write_b;
// return;
// epoch_vram_write(addr, val, epoch);
}
// static void
// epoch_vram_writeb(uint32_t addr, uint8_t val, void *priv)
// {
// epoch_t *epoch = (epoch_t *) priv;
// // epoch_log("%04X:%04X epoch_vwb: %x, val %x\n", cs >> 4, cpu_state.pc, addr, val);
// cycles -= video_timing_write_b;
// // return;
// // epoch_vram_write(addr, val, epoch);
// }
static void
epoch_vram_writew(uint32_t addr, uint16_t val, void *priv)
{
@@ -1310,15 +1312,15 @@ epoch_vram_writew(uint32_t addr, uint16_t val, void *priv)
// epoch_log("%x %x\n", addr, addr + 1);
}
static uint8_t
epoch_vram_readb(uint32_t addr, void *priv)
{
epoch_t *epoch = (epoch_t *) priv;
cycles -= video_timing_read_b;
// return 0xff;
// epoch_log("%04X:%04X epoch_vrb: %x, val %x\n", cs >> 4, cpu_state.pc, addr, epoch_vram_read(addr, epoch));
// return epoch_vram_read(addr, epoch);
}
// static uint8_t
// epoch_vram_readb(uint32_t addr, void *priv)
// {
// epoch_t *epoch = (epoch_t *) priv;
// cycles -= video_timing_read_b;
// // return 0xff;
// // epoch_log("%04X:%04X epoch_vrb: %x, val %x\n", cs >> 4, cpu_state.pc, addr, epoch_vram_read(addr, epoch));
// // return epoch_vram_read(addr, epoch);
// }
static uint16_t
epoch_vram_readw(uint32_t addr, void *priv)
@@ -2320,8 +2322,8 @@ epoch_init(UNUSED(const device_t *info))
mem_mapping_add(&epoch->cmap, 0xE0000, 0x1000, epoch_cram_readb, epoch_cram_readw, NULL,
epoch_cram_writeb, epoch_cram_writew, NULL, NULL, MEM_MAPPING_EXTERNAL, epoch);
mem_mapping_add(&epoch->vmap, 0xA0000, 0x40000, epoch_vram_readb, epoch_vram_readw, NULL,
epoch_vram_writeb, epoch_vram_writew, NULL, NULL, MEM_MAPPING_EXTERNAL, epoch);
mem_mapping_add(&epoch->vmap, 0xA0000, 0x40000, NULL, epoch_vram_readw, NULL,
NULL, epoch_vram_writew, NULL, NULL, MEM_MAPPING_EXTERNAL, epoch);
// mem_mapping_add(&epoch->fontcard.map, 0xF0000, 0xC000, epoch_font_readb, NULL, NULL,
// epoch_font_writeb, NULL, NULL, NULL, MEM_MAPPING_EXTERNAL, epoch);