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geneve: Fix mapping of external SRAM expansion.

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This commit is contained in:
Michael Zapf 2024-05-09 21:06:52 +02:00
parent 9b12b9abfc
commit de8d9d7886
2 changed files with 6 additions and 3 deletions
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8
src/devices/bus/ti99/internal/genboard.cpp
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@ -734,10 +734,12 @@ void geneve_gate_array_device::get_page(geneve_gate_array_device::decdata* dec)
}
}
const geneve_gate_array_device::physentry_t geneve_gate_array_device::s_physmap[7] =
const geneve_gate_array_device::physentry_t geneve_gate_array_device::s_physmap[8] =
{
{ 0x00, 0x3f, MPDRAM, "DRAM" },
{ 0x40, 0x3f, MPEXP, "Future exp (on-board)" },
{ 0xc0, 0x1f, MPSRAMF, "Future SRAM exp" },
{ 0xe0, 0x07, MPSRAMF, "Future SRAM exp" },
{ 0xe8, 0x03, MPSRAMX, "SRAM exp" },
{ 0xec, 0x03, MPSRAM, "SRAM" },
{ 0xf0, 0x0f, MPEPROM, "Boot ROM/PFM" },
@ -774,7 +776,7 @@ void geneve_gate_array_device::decode_physical(geneve_gate_array_device::decdata
// Search for the matching page interval. Cartridge space will be decoded as DRAM.
bool found = false;
for (int i = 0; (i < 6) && !found; i++)
for (int i = 0; (i < 8) && !found; i++)
{
if ((dec->physpage & ~s_physmap[i].mask) == s_physmap[i].base)
{
@ -814,7 +816,7 @@ bool geneve_gate_array_device::accessing_dram_s(int function)
bool geneve_gate_array_device::accessing_sram_s(int function)
{
return (function == MPSRAM) || (function == MPSRAMX);
return (function == MPSRAM) || (function == MPSRAMX) || (function == MPSRAMF);
}
bool geneve_gate_array_device::accessing_devs_s(int function)

1
src/devices/bus/ti99/internal/genboard.h
View File

@ -154,6 +154,7 @@ private:
MPEPROM,
MPSRAM,
MPSRAMX,
MPSRAMF,
MBOX,
CARTPROT