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Added Kingston MC64 memory expansion card (adf 71d0) which allows up to 64MB of RAM in the MCA-based 386DX-based models as well as a IBM CPU planar upgrade which allows 486DX cpu's to be used on the 386DX-based 80 models.

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Fixed missing part of the width in the Compaq CGA cards.
This commit is contained in:
TC1995
2021-12-23 17:38:58 +01:00
parent 0126d7dbef
commit 3975957590
3 changed files with 58 additions and 19 deletions
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67
src/machine/m_ps2_mca.c
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@@ -862,13 +862,8 @@ static void ps2_mca_mem_fffc_init(int start_mb)
{
uint32_t planar_size, expansion_start;
if (start_mb == 2) {
planar_size = 0x160000;
expansion_start = 0x260000;
} else {
planar_size = (start_mb - 1) << 20;
expansion_start = start_mb << 20;
}
planar_size = (start_mb - 1) << 20;
expansion_start = start_mb << 20;
mem_mapping_set_addr(&ram_high_mapping, 0x100000, planar_size);
@@ -919,6 +914,36 @@ static void ps2_mca_mem_fffc_init(int start_mb)
mem_mapping_disable(&ps2.expansion_mapping);
}
static void ps2_mca_mem_d071_init(int start_mb)
{
uint32_t planar_size, expansion_start;
planar_size = (start_mb - 1) << 20;
expansion_start = start_mb << 20;
mem_mapping_set_addr(&ram_high_mapping, 0x100000, planar_size);
ps2.mem_pos_regs[0] = 0xd0;
ps2.mem_pos_regs[1] = 0x71;
ps2.mem_pos_regs[4] = (mem_size / 1024) - start_mb;
mca_add(ps2_mem_expansion_read, ps2_mem_expansion_write, ps2_mem_expansion_feedb, NULL, NULL);
mem_mapping_add(&ps2.expansion_mapping,
expansion_start,
(mem_size - (start_mb << 10)) << 10,
mem_read_ram,
mem_read_ramw,
mem_read_raml,
mem_write_ram,
mem_write_ramw,
mem_write_raml,
&ram[expansion_start],
MEM_MAPPING_INTERNAL,
NULL);
mem_mapping_disable(&ps2.expansion_mapping);
}
static void ps2_mca_board_model_50_init()
{
ps2_mca_board_common_init();
@@ -995,7 +1020,7 @@ static void ps2_mca_board_model_55sx_init()
model_55sx_mem_recalc();
}
static void mem_encoding_update()
static void mem_encoding_update(void)
{
mem_mapping_disable(&ps2.split_mapping);
@@ -1005,6 +1030,8 @@ static void mem_encoding_update()
mem_set_mem_state(1 << 20, (mem_size << 10) - (1 << 20), MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
ps2.split_addr = ((uint32_t) (ps2.mem_regs[0] & 0xf)) << 20;
if (!ps2.split_addr)
ps2.split_addr = 1 << 20;
if (ps2.mem_regs[1] & 2) {
mem_set_mem_state(0xe0000, 0x20000, MEM_READ_EXTANY | MEM_WRITE_INTERNAL);
@@ -1210,14 +1237,22 @@ static void ps2_mca_board_model_70_type34_init(int is_type4, int slots)
if (ps2.planar_id == 0xfff9) {
if (mem_size > 4096)
{
/* Only 4 MB supported on planar, create a memory expansion card for the rest */
ps2_mca_mem_fffc_init(4);
/* Only 4 MB supported on planar, create a memory expansion card for the rest */
if (mem_size > 12288) {
ps2_mca_mem_d071_init(4);
} else {
ps2_mca_mem_fffc_init(4);
}
}
} else {
if (mem_size > 8192)
{
/* Only 8 MB supported on planar, create a memory expansion card for the rest */
ps2_mca_mem_fffc_init(8);
/* Only 8 MB supported on planar, create a memory expansion card for the rest */
if (mem_size > 16384)
ps2_mca_mem_d071_init(8);
else {
ps2_mca_mem_fffc_init(8);
}
}
}
@@ -1288,8 +1323,12 @@ static void ps2_mca_board_model_80_type2_init(int is486)
if ((mem_size > 4096) && !is486)
{
/* Only 4 MB supported on planar, create a memory expansion card for the rest */
ps2_mca_mem_fffc_init(4);
/* Only 4 MB supported on planar, create a memory expansion card for the rest */
if (mem_size > 12288)
ps2_mca_mem_d071_init(4);
else {
ps2_mca_mem_fffc_init(4);
}
}
if (gfxcard == VID_INTERNAL)