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Install BASIC ROM.

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This commit is contained in:
Thomas Harte
2025-08-13 23:36:07 -04:00
parent 9309d8c3f2
commit 9cff26b163
2 changed files with 28 additions and 10 deletions
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Machines/PCCompatible/PCCompatible.cpp
+22 -8
View File
@@ -610,6 +610,8 @@ public:
constexpr auto bios_AT_odd = ROM::Name::PCCompatibleIBMATBIOSNov85U47;
constexpr auto bios_AT_Phoenix = ROM::Name::PCCompatiblePhoenix80286BIOS;
constexpr auto rom_BASIC = ROM::Name::IBMBASIC110;
ROM::Request request = ROM::Request(font);
switch(pc_model) {
default:
@@ -619,7 +621,7 @@ public:
auto at_even_odd = ROM::Request(bios_AT_odd) && ROM::Request(bios_AT_even);
auto at_full = ROM::Request(bios_AT);
auto phoenix_full = ROM::Request(bios_AT_Phoenix);
const auto at_any = at_even_odd || at_full || phoenix_full;
const auto at_any = ((at_even_odd || at_full) && rom_BASIC) || phoenix_full;
request = request && at_any;
} break;
}
@@ -656,6 +658,8 @@ public:
const auto install_at = [&] {
const auto bios_even = roms.find(bios_AT_even);
const auto bios_odd = roms.find(bios_AT_odd);
bool is_ibm = false;
if(bios_even != roms.end() && bios_odd != roms.end()) {
std::vector<uint8_t> bios(65536);
@@ -664,15 +668,25 @@ public:
}
install_bios(bios);
return;
is_ibm = true;
} else {
for(const auto name: {bios_AT, bios_AT_Phoenix}) {
const auto bios_contents = roms.find(name);
if(bios_contents != roms.end()) {
install_bios(bios_contents->second);
is_ibm = name == bios_AT;
break;
}
}
}
for(const auto name: {bios_AT, bios_AT_Phoenix}) {
const auto bios_contents = roms.find(name);
if(bios_contents != roms.end()) {
install_bios(bios_contents->second);
return;
}
if(is_ibm) {
const auto basic = roms.find(rom_BASIC);
context_.linear_memory.install(
0xf'6000,
basic->second.data(),
uint32_t(basic->second.size())
);
}
};
ROMImages/PCCompatible/readme.txt
+6 -2
View File
@@ -7,10 +7,14 @@ For XT-class emulation:
For AT-class emulation:
BIOS_5170_15NOV85_U27_61X9266_27256.BIN and
BIOS_5170_15NOV85_U47_61X9265_27256.BIN — the IBM PC AT BIOS.
ibm-basic-1.10.rom — IBM ROM BIOS version 1.10.
Either:
at-bios.bin; or both
BIOS_5170_15NOV85_U27_61X9266_27256.BIN and
BIOS_5170_15NOV85_U47_61X9265_27256.BIN — the IBM PC AT BIOS.
For specific video cards:
EUMDA9.F14 — the MDA font.