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More cleanups in mem.ch, removing old and/or unneeded stuff.

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This commit is contained in:
waltje
2018-08-20 18:16:05 -04:00
parent edf88b1afc
commit ed871b3c27
4 changed files with 40 additions and 59 deletions
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6
src/machines/m_at_scat.c
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@@ -10,7 +10,7 @@
* *
* Re-worked version based on the 82C235 datasheet and errata. * Re-worked version based on the 82C235 datasheet and errata.
* *
* Version: @(#)m_at_scat.c 1.0.9 2018/06/12 * Version: @(#)m_at_scat.c 1.0.10 2018/08/20
* *
* Authors: Fred N. van Kempen, <decwiz@yahoo.com> * Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Original by GreatPsycho for PCem. * Original by GreatPsycho for PCem.
@@ -1349,7 +1349,6 @@ scat_init(void)
scat_port_92 = 0; scat_port_92 = 0;
mem_mapping_disable(&ram_low_mapping); mem_mapping_disable(&ram_low_mapping);
mem_mapping_disable(&ram_mid_mapping);
mem_mapping_disable(&ram_high_mapping); mem_mapping_disable(&ram_high_mapping);
for (i = 0; i < 4; i++) for (i = 0; i < 4; i++)
mem_mapping_disable(&bios_mapping[i]); mem_mapping_disable(&bios_mapping[i]);
@@ -1372,8 +1371,6 @@ scat_init(void)
mem_mapping_add(&scat_ems_mapping[i], (i + (i >= 24 ? 28 : 16)) << 14, 0x04000, mem_read_scatb, mem_read_scatw, mem_read_scatl, mem_write_scatb, mem_write_scatw, mem_write_scatl, ram + ((i + (i >= 24 ? 28 : 16)) << 14), 0, &scat_stat[i]); mem_mapping_add(&scat_ems_mapping[i], (i + (i >= 24 ? 28 : 16)) << 14, 0x04000, mem_read_scatb, mem_read_scatw, mem_read_scatl, mem_write_scatb, mem_write_scatw, mem_write_scatl, ram + ((i + (i >= 24 ? 28 : 16)) << 14), 0, &scat_stat[i]);
} }
for(i=4;i<10;i++) isram[i] = 0;
for (i = (scat_regs[SCAT_VERSION] < 4 ? 0 : 8); i < 16; i++) { for (i = (scat_regs[SCAT_VERSION] < 4 ? 0 : 8); i < 16; i++) {
mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + ((i << 14) & biosmask), 0, NULL); mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + ((i << 14) & biosmask), 0, NULL);
mem_mapping_enable(&scat_high_mapping[i]); mem_mapping_enable(&scat_high_mapping[i]);
@@ -1425,7 +1422,6 @@ scatsx_init(void)
scat_port_92 = 0; scat_port_92 = 0;
mem_mapping_disable(&ram_low_mapping); mem_mapping_disable(&ram_low_mapping);
mem_mapping_disable(&ram_mid_mapping);
mem_mapping_disable(&ram_high_mapping); mem_mapping_disable(&ram_high_mapping);
for (i = 0; i < 4; i++) for (i = 0; i < 4; i++)
mem_mapping_disable(&bios_mapping[i]); mem_mapping_disable(&bios_mapping[i]);

5
src/machines/m_ps2_mca.c
View File

@@ -8,7 +8,7 @@
* *
* Implementation of MCA-based PS/2 machines. * Implementation of MCA-based PS/2 machines.
* *
* Version: @(#)m_ps2_mca.c 1.0.15 2018/05/06 * Version: @(#)m_ps2_mca.c 1.0.16 2018/08/20
* *
* Authors: Fred N. van Kempen, <decwiz@yahoo.com> * Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Miran Grca, <mgrca8@gmail.com> * Miran Grca, <mgrca8@gmail.com>
@@ -1048,10 +1048,13 @@ static void mem_encoding_write_cached(uint16_t addr, uint8_t val, void *p)
ps2.pending_cache_miss = 1; ps2.pending_cache_miss = 1;
if ((val & 0x21) == 0x01 && (old & 0x21) != 0x01) if ((val & 0x21) == 0x01 && (old & 0x21) != 0x01)
ps2_cache_clean(); ps2_cache_clean();
#if 1
// FIXME: Look into this!!!
if (val & 0x01) if (val & 0x01)
ram_mid_mapping.flags |= MEM_MAPPING_ROM; ram_mid_mapping.flags |= MEM_MAPPING_ROM;
else else
ram_mid_mapping.flags &= ~MEM_MAPPING_ROM; ram_mid_mapping.flags &= ~MEM_MAPPING_ROM;
#endif
break; break;
} }
// pclog("mem_encoding_write: addr=%02x val=%02x %04x:%04x %02x %02x\n", addr, val, CS,cpu_state.pc, ps2.mem_regs[1],ps2.mem_regs[2]); // pclog("mem_encoding_write: addr=%02x val=%02x %04x:%04x %02x %02x\n", addr, val, CS,cpu_state.pc, ps2.mem_regs[1],ps2.mem_regs[2]);

49
src/mem.c
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@@ -12,7 +12,7 @@
* the DYNAMIC_TABLES=1 enables this. Will eventually go * the DYNAMIC_TABLES=1 enables this. Will eventually go
* away, either way... * away, either way...
* *
* Version: @(#)mem.c 1.0.16 2018/08/17 * Version: @(#)mem.c 1.0.16 2018/08/20
* *
* Authors: Fred N. van Kempen, <decwiz@yahoo.com> * Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Miran Grca, <mgrca8@gmail.com> * Miran Grca, <mgrca8@gmail.com>
@@ -69,11 +69,12 @@
mem_mapping_t base_mapping, mem_mapping_t base_mapping,
ram_low_mapping, ram_low_mapping, /* 0..640K mapping */
ram_high_mapping, #if 1
ram_mid_mapping, ram_mid_mapping,
ram_remapped_mapping, #endif
ram_split_mapping, ram_remapped_mapping, /* 640..1024K mapping */
ram_high_mapping, /* 1024K+ mapping */
bios_mapping[8], bios_mapping[8],
bios_high_mapping[8], bios_high_mapping[8],
romext_mapping; romext_mapping;
@@ -82,8 +83,6 @@ page_t *pages, /* RAM page table */
**page_lookup; /* pagetable lookup */ **page_lookup; /* pagetable lookup */
uint32_t pages_sz = 0; /* #pages in table */ uint32_t pages_sz = 0; /* #pages in table */
uint8_t isram[0x10000];
uint8_t *ram; /* the virtual RAM */ uint8_t *ram; /* the virtual RAM */
uint32_t rammask; uint32_t rammask;
@@ -114,8 +113,6 @@ int cachesize = 256;
uint32_t ram_mapped_addr[64]; uint32_t ram_mapped_addr[64];
int split_mapping_enabled = 0;
uint32_t get_phys_virt, uint32_t get_phys_virt,
get_phys_phys; get_phys_phys;
@@ -1580,8 +1577,6 @@ mem_reset(void)
{ {
uint32_t c, m; uint32_t c, m;
split_mapping_enabled = 0;
/* Free the ROM memory and reset size mask. */ /* Free the ROM memory and reset size mask. */
if (rom != NULL) { if (rom != NULL) {
free(rom); free(rom);
@@ -1676,14 +1671,6 @@ pclog("MEM: reset: new pages=%08lx, pages_sz=%i\n", pages, pages_sz);
/* Initialize the tables. */ /* Initialize the tables. */
resetreadlookup(); resetreadlookup();
memset(isram, 0x00, sizeof(isram));
for (c = 0; c < ((uint32_t)mem_size / 64); c++) {
isram[c] = 1;
if ((c >= 0xa && c <= 0xf) ||
(cpu_16bitbus && c >= 0xfe && c <= 0xff))
isram[c] = 0;
}
memset(_mem_read_b, 0x00, sizeof(_mem_read_b)); memset(_mem_read_b, 0x00, sizeof(_mem_read_b));
memset(_mem_read_w, 0x00, sizeof(_mem_read_w)); memset(_mem_read_w, 0x00, sizeof(_mem_read_w));
memset(_mem_read_l, 0x00, sizeof(_mem_read_l)); memset(_mem_read_l, 0x00, sizeof(_mem_read_l));
@@ -1727,11 +1714,13 @@ pclog("MEM: reset: new pages=%08lx, pages_sz=%i\n", pages, pages_sz);
} }
} }
#if 1
if (mem_size > 768) if (mem_size > 768)
mem_mapping_add(&ram_mid_mapping, 0xc0000, 0x40000, mem_mapping_add(&ram_mid_mapping, 0xc0000, 0x40000,
mem_read_ram,mem_read_ramw,mem_read_raml, mem_read_ram,mem_read_ramw,mem_read_raml,
mem_write_ram,mem_write_ramw,mem_write_raml, mem_write_ram,mem_write_ramw,mem_write_raml,
ram + 0xc0000, MEM_MAPPING_INTERNAL, NULL); ram + 0xc0000, MEM_MAPPING_INTERNAL, NULL);
#endif
if (romset == ROM_IBMPS1_2011) if (romset == ROM_IBMPS1_2011)
mem_mapping_add(&romext_mapping, 0xc8000, 0x08000, mem_mapping_add(&romext_mapping, 0xc8000, 0x08000,
@@ -1744,12 +1733,6 @@ pclog("MEM: reset: new pages=%08lx, pages_sz=%i\n", pages, pages_sz);
ram + (1 << 20), MEM_MAPPING_INTERNAL, NULL); ram + (1 << 20), MEM_MAPPING_INTERNAL, NULL);
mem_mapping_disable(&ram_remapped_mapping); mem_mapping_disable(&ram_remapped_mapping);
mem_mapping_add(&ram_split_mapping, mem_size * 1024, 384 * 1024,
mem_read_ram, mem_read_ramw, mem_read_raml,
mem_write_ram,mem_write_ramw,mem_write_raml,
ram + (1 << 20), MEM_MAPPING_INTERNAL, NULL);
mem_mapping_disable(&ram_split_mapping);
mem_a20_init(); mem_a20_init();
} }
@@ -1783,25 +1766,23 @@ mem_init(void)
static void static void
mem_remap_top(int max_size) mem_remap_top(int max_size)
{ {
uint32_t c;
if (mem_size > 640) {
uint32_t start = (mem_size >= 1024) ? mem_size : 1024; uint32_t start = (mem_size >= 1024) ? mem_size : 1024;
int size = mem_size - 640; int size = mem_size - 640;
pclog("MEM: remapping top %iKB (mem=%i)\n", max_size, mem_size);
if (mem_size <= 640) return;
if (size > max_size) if (size > max_size)
size = max_size; size = max_size;
for (c = (start / 64); c < ((start + size - 1) / 64); c++)
isram[c] = 1;
mem_set_mem_state(start * 1024, size * 1024, mem_set_mem_state(start * 1024, size * 1024,
MEM_READ_INTERNAL | MEM_WRITE_INTERNAL); MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
mem_mapping_set_addr(&ram_remapped_mapping, mem_mapping_set_addr(&ram_remapped_mapping, start * 1024, size * 1024);
start * 1024, size * 1024); #if 0
mem_mapping_set_exec(&ram_split_mapping, ram + (start * 1024)); mem_mapping_set_exec(&ram_split_mapping, ram + (start * 1024));
#endif
flushmmucache(); flushmmucache();
}
} }

27
src/mem.h
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@@ -8,7 +8,7 @@
* *
* Definitions for the memory interface. * Definitions for the memory interface.
* *
* Version: @(#)mem.h 1.0.6 2018/08/17 * Version: @(#)mem.h 1.0.8 2018/08/20
* *
* Authors: Fred N. van Kempen, <decwiz@yahoo.com> * Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Sarah Walker, <tommowalker@tommowalker.co.uk> * Sarah Walker, <tommowalker@tommowalker.co.uk>
@@ -118,10 +118,11 @@ extern uint32_t ram_mapped_addr[64];
mem_mapping_t base_mapping, mem_mapping_t base_mapping,
ram_low_mapping, ram_low_mapping,
ram_high_mapping, #if 1
ram_mid_mapping, ram_mid_mapping,
#endif
ram_remapped_mapping, ram_remapped_mapping,
ram_split_mapping, ram_high_mapping,
bios_mapping[8], bios_mapping[8],
bios_high_mapping[8], bios_high_mapping[8],
romext_mapping; romext_mapping;
@@ -140,7 +141,6 @@ extern int readlnum,
extern int nopageerrors; extern int nopageerrors;
extern int memspeed[11]; extern int memspeed[11];
extern uint8_t isram[0x10000];
extern int mmu_perm; extern int mmu_perm;
@@ -179,9 +179,10 @@ extern uint32_t mmutranslatereal(uint32_t addr, int rw);
extern void addreadlookup(uint32_t virt, uint32_t phys); extern void addreadlookup(uint32_t virt, uint32_t phys);
extern void addwritelookup(uint32_t virt, uint32_t phys); extern void addwritelookup(uint32_t virt, uint32_t phys);
extern void mem_mapping_del(mem_mapping_t *map);
extern void mem_mapping_add(mem_mapping_t *map, extern void mem_mapping_del(mem_mapping_t *);
extern void mem_mapping_add(mem_mapping_t *,
uint32_t base, uint32_t base,
uint32_t size, uint32_t size,
uint8_t (*read_b)(uint32_t addr, void *p), uint8_t (*read_b)(uint32_t addr, void *p),
@@ -194,7 +195,7 @@ extern void mem_mapping_add(mem_mapping_t *map,
uint32_t flags, uint32_t flags,
void *p); void *p);
extern void mem_mapping_set_handler(mem_mapping_t *map, extern void mem_mapping_set_handler(mem_mapping_t *,
uint8_t (*read_b)(uint32_t addr, void *p), uint8_t (*read_b)(uint32_t addr, void *p),
uint16_t (*read_w)(uint32_t addr, void *p), uint16_t (*read_w)(uint32_t addr, void *p),
uint32_t (*read_l)(uint32_t addr, void *p), uint32_t (*read_l)(uint32_t addr, void *p),
@@ -202,15 +203,15 @@ extern void mem_mapping_set_handler(mem_mapping_t *map,
void (*write_w)(uint32_t addr, uint16_t val, void *p), void (*write_w)(uint32_t addr, uint16_t val, void *p),
void (*write_l)(uint32_t addr, uint32_t val, void *p)); void (*write_l)(uint32_t addr, uint32_t val, void *p));
extern void mem_mapping_set_p(mem_mapping_t *map, void *p); extern void mem_mapping_set_p(mem_mapping_t *, void *p);
extern void mem_mapping_set_dev(mem_mapping_t *map, void *dev); extern void mem_mapping_set_dev(mem_mapping_t *, void *dev);
extern void mem_mapping_set_addr(mem_mapping_t *map, extern void mem_mapping_set_addr(mem_mapping_t *,
uint32_t base, uint32_t size); uint32_t base, uint32_t size);
extern void mem_mapping_set_exec(mem_mapping_t *map, uint8_t *exec); extern void mem_mapping_set_exec(mem_mapping_t *, uint8_t *exec);
extern void mem_mapping_disable(mem_mapping_t *mapg); extern void mem_mapping_disable(mem_mapping_t *);
extern void mem_mapping_enable(mem_mapping_t *map); extern void mem_mapping_enable(mem_mapping_t *);
extern void mem_set_mem_state(uint32_t base, uint32_t size, int state); extern void mem_set_mem_state(uint32_t base, uint32_t size, int state);