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ISAMEM cleanups

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This commit is contained in:
Jasmine Iwanek
2022-01-15 19:01:09 -05:00
parent a9a86cad7d
commit 814953def7
1 changed files with 36 additions and 27 deletions
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63
src/device/isamem.c
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@@ -84,6 +84,12 @@
#include "cpu.h"
#define ISAMEM_IBMXT_CARD 0
#define ISAMEM_IBMAT_CARD 2
#define ISAMEM_P5PAK_CARD 4
#define ISAMEM_EMS5150_CARD 6
#define ISAMEM_EV159_CARD 10
#define ISAMEM_RAMPAGEXT_CARD 11
#define ISAMEM_DEBUG 0
@@ -95,6 +101,9 @@
#define EMS_PGSIZE (16 << 10) /* one page is this big */
#define EMS_MAXPAGE 4 /* number of viewport pages */
#define EXTRAM_CONVENTIONAL 0
#define EXTRAM_HIGH 1
#define EXTRAM_XMS 2
typedef struct {
int8_t enabled; /* 1=ENABLED */
@@ -398,28 +407,28 @@ isamem_init(const device_t *info)
/* Do per-board initialization. */
tot = 0;
switch(dev->board) {
case 0: /* IBM PC/XT Memory Expansion Card */
case 2: /* Paradise Systems 5-PAK */
case ISAMEM_IBMXT_CARD: /* IBM PC/XT Memory Expansion Card */
case ISAMEM_P5PAK_CARD: /* Paradise Systems 5-PAK */
dev->total_size = device_get_config_int("size");
dev->start_addr = device_get_config_int("start");
tot = dev->total_size;
break;
case 1: /* IBM PC/AT Memory Expansion Card */
case ISAMEM_IBMAT_CARD: /* IBM PC/AT Memory Expansion Card */
dev->total_size = device_get_config_int("size");
dev->start_addr = device_get_config_int("start");
tot = dev->total_size;
dev->flags |= FLAG_WIDE;
break;
case 3: /* Micro Mainframe EMS-5150(T) */
case ISAMEM_EMS5150_CARD: /* Micro Mainframe EMS-5150(T) */
dev->base_addr = device_get_config_hex16("base");
dev->total_size = device_get_config_int("size");
dev->frame_addr = 0xD0000;
dev->flags |= (FLAG_EMS | FLAG_CONFIG);
break;
case 10: /* Everex EV-159 RAM 3000 */
case ISAMEM_EV159_CARD: /* Everex EV-159 RAM 3000 */
dev->base_addr = device_get_config_hex16("base");
dev->total_size = device_get_config_int("size");
dev->start_addr = device_get_config_int("start");
@@ -433,7 +442,7 @@ isamem_init(const device_t *info)
dev->frame_addr = 0xE0000;
break;
case 11:
case ISAMEM_RAMPAGEXT_CARD: /* AST RAMpage/XT */
dev->base_addr = device_get_config_hex16("base");
dev->total_size = device_get_config_int("size");
dev->start_addr = device_get_config_int("start");
@@ -496,8 +505,8 @@ dev->frame_addr = 0xE0000;
t = tot;
isamem_log("ISAMEM: RAM at %05iKB (%iKB)\n", addr>>10, t>>10);
dev->ext_ram[0].ptr = ptr;
dev->ext_ram[0].base = addr;
dev->ext_ram[EXTRAM_CONVENTIONAL].ptr = ptr;
dev->ext_ram[EXTRAM_CONVENTIONAL].base = addr;
/* Create, initialize and enable the low-memory mapping. */
mem_mapping_add(&dev->low_mapping, addr, t,
@@ -507,7 +516,7 @@ dev->frame_addr = 0xE0000;
ram_writeb,
(dev->flags&FLAG_WIDE) ? ram_writew : NULL,
NULL,
ptr, MEM_MAPPING_EXTERNAL, &dev->ext_ram[0]);
ptr, MEM_MAPPING_EXTERNAL, &dev->ext_ram[EXTRAM_CONVENTIONAL]);
/* Tell the memory system this is external RAM. */
mem_set_mem_state(addr, t,
@@ -531,8 +540,8 @@ dev->frame_addr = 0xE0000;
isamem_log("ISAMEM: RAM at %05iKB (%iKB)\n", addr>>10, t>>10);
dev->ext_ram[1].ptr = ptr;
dev->ext_ram[1].base = addr + tot;
dev->ext_ram[EXTRAM_HIGH].ptr = ptr;
dev->ext_ram[EXTRAM_HIGH].base = addr + tot;
/* Update and enable the remap. */
mem_mapping_set(&ram_remapped_mapping,
@@ -540,7 +549,7 @@ dev->frame_addr = 0xE0000;
ram_readb, ram_readw, NULL,
ram_writeb, ram_writew, NULL,
ptr, MEM_MAPPING_EXTERNAL,
&dev->ext_ram[1]);
&dev->ext_ram[EXTRAM_HIGH]);
mem_mapping_disable(&ram_remapped_mapping);
/* Tell the memory system this is external RAM. */
@@ -565,14 +574,14 @@ dev->frame_addr = 0xE0000;
t = tot;
isamem_log("ISAMEM: RAM at %05iKB (%iKB)\n", addr>>10, t>>10);
dev->ext_ram[2].ptr = ptr;
dev->ext_ram[2].base = addr;
dev->ext_ram[EXTRAM_XMS].ptr = ptr;
dev->ext_ram[EXTRAM_XMS].base = addr;
/* Create, initialize and enable the high-memory mapping. */
mem_mapping_add(&dev->high_mapping, addr, t,
ram_readb, ram_readw, NULL,
ram_writeb, ram_writew, NULL,
ptr, MEM_MAPPING_EXTERNAL, &dev->ext_ram[2]);
ptr, MEM_MAPPING_EXTERNAL, &dev->ext_ram[EXTRAM_XMS]);
/* Tell the memory system this is external RAM. */
mem_set_mem_state(addr, t, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
@@ -663,7 +672,7 @@ static const device_config_t ibmxt_config[] =
},
{
"start", "Start Address", CONFIG_SPINNER, "", 256, "",
{ 0, 640-64, 64 },
{ 0, 576, 64 },
{ { 0 } }
},
{
@@ -674,7 +683,7 @@ static const device_config_t ibmxt_config[] =
static const device_t ibmxt_device = {
"IBM PC/XT Memory Expansion",
DEVICE_ISA,
0,
ISAMEM_IBMXT_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
ibmxt_config
@@ -685,12 +694,12 @@ static const device_config_t ibmat_config[] =
{
{
"size", "Memory Size", CONFIG_SPINNER, "", 512, "",
{ 0, 4096, 512 },
{ 0, 12288, 512 },
{ { 0 } }
},
{
"start", "Start Address", CONFIG_SPINNER, "", 512, "",
{ 0, 16128, 128 },
{ 0, 15872, 512 },
{ { 0 } }
},
{
@@ -701,7 +710,7 @@ static const device_config_t ibmat_config[] =
static const device_t ibmat_device = {
"IBM PC/AT Memory Expansion",
DEVICE_ISA,
1,
ISAMEM_IBMAT_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
ibmat_config
@@ -728,7 +737,7 @@ static const device_config_t p5pak_config[] =
static const device_t p5pak_device = {
"Paradise Systems 5-PAK",
DEVICE_ISA,
2,
ISAMEM_P5PAK_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
p5pak_config
@@ -774,7 +783,7 @@ static const device_config_t ems5150_config[] =
static const device_t ems5150_device = {
"Micro Mainframe EMS-5150(T)",
DEVICE_ISA,
3,
ISAMEM_EMS5150_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
ems5150_config
@@ -877,7 +886,7 @@ static const device_config_t ev159_config[] =
static const device_t ev159_device = {
"Everex EV-159 RAM 3000 Deluxe",
DEVICE_ISA,
10,
ISAMEM_EV159_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
ev159_config
@@ -978,7 +987,7 @@ static const device_config_t rampage_config[] =
static const device_t isamem_rampage_device = {
"AST RAMpage/XT",
DEVICE_ISA,
11,
ISAMEM_RAMPAGEXT_CARD,
isamem_init, isamem_close, NULL,
{ NULL }, NULL, NULL,
rampage_config
@@ -990,7 +999,7 @@ static const struct {
const char *internal_name;
const device_t *dev;
} boards[] = {
{ "none", NULL },
{ "none", NULL },
{ "ibmxt", &ibmxt_device },
{ "ibmat", &ibmat_device },
{ "p5pak", &p5pak_device },
@@ -1003,9 +1012,9 @@ static const struct {
{ "rampage", &rampage_device },
#endif
#ifdef USE_ISAMEM_IAB
{ "iab", &iab_device },
{ "iab", &iab_device },
#endif
{ "", NULL }
{ "", NULL }
};