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Fix: keys are now unpressed.

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Some sort of text is now 'output' (though not yet displayed by the emulator) and then an endless loop on the ACIA begins.

So the next PR will need to add that.
This commit is contained in:
Thomas Harte
2025-09-16 17:25:13 -04:00
parent 019526332d
commit 811a010a60
1 changed files with 11 additions and 2 deletions
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13
Machines/Acorn/BBCMicro/BBCMicro.cpp
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@@ -139,9 +139,9 @@ struct SystemVIAPortHandler: public MOS::MOS6522::IRQDelegatePortHandler {
}
// Read keyboard. Low six bits of output are key to check, state should be returned in high bit.
// Logger::info().append("Keyboard read from line %d", port_a_output_);
Logger::info().append("Keyboard read from key %d", port_a_output_);
switch(port_a_output_ & 0x7f) {
default: return 0x80; // Default: key not pressed.
default: return 0x00; // Default: key not pressed.
case 9: return 0x00; //
case 8: return 0x00; // Startup mode. (= mode 7?)
@@ -459,6 +459,7 @@ public:
//
// Check for an IO access; if found then perform that and exit.
//
// static bool log = false;
if(address >= 0xfc00 && address < 0xff00) {
if(address >= 0xfe40 && address < 0xfe60) {
if(is_read(operation)) {
@@ -525,6 +526,14 @@ public:
//
// ROM or RAM access.
//
// if(operation == CPU::MOS6502Esque::BusOperation::ReadOpcode) {
// log |= address == 0xc4c0;
//
// if(log) {
// printf("%04x\n", address);
// }
// }
if(is_read(operation)) {
// TODO: probably don't do this with this condition? See how it compiles. If it's a CMOV somehow, no problem.
if((address >> 14) == 2 && !sideways_read_mask_) {