6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-24 12:30:17 +00:00
Code Issues Projects Releases Wiki Activity

Treat reset as a continuing state.

Browse Source
This commit is contained in:
Thomas Harte 2023-12-25 18:43:35 -05:00
parent 35f000f93c
commit 16b646ad2e
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Machines/PCCompatible/PCCompatible.cpp
View File

@ -362,19 +362,26 @@ class KeyboardController {
//; 00 - force clock line low, resetting keyboard, but on a 01->00 transition, //; 00 - force clock line low, resetting keyboard, but on a 01->00 transition,
//; IRQ1 would remain high //; IRQ1 would remain high
void set_mode(uint8_t mode) { void set_mode(uint8_t mode) {
printf("Mode: %02x\n", mode);
const auto last_mode = mode_;
mode_ = Mode(mode); mode_ = Mode(mode);
switch(mode_) { switch(mode_) {
case Mode::NormalOperation: break; case Mode::NormalOperation: break;
case Mode::NoIRQsIgnoreInput: case Mode::NoIRQsIgnoreInput:
pic_.apply_edge<1>(false); pic_.apply_edge<1>(false);
break; break;
case Mode::Reset:
input_.clear();
[[fallthrough]];
case Mode::ClearIRQReset: case Mode::ClearIRQReset:
pic_.apply_edge<1>(false); pic_.apply_edge<1>(false);
[[fallthrough]];
case Mode::Reset:
reset_delay_ = 15; // Arbitrarily.
break; break;
} }
// If the reset condition ends, start a counter through until reset is complete.
if(last_mode == Mode::Reset && mode_ != Mode::Reset) {
reset_delay_ = 15; // Arbitrarily.
}
} }
void run_for(Cycles cycles) { void run_for(Cycles cycles) {
@ -403,7 +410,7 @@ class KeyboardController {
} }
void post(uint8_t value) { void post(uint8_t value) {
if(mode_ == Mode::NoIRQsIgnoreInput) { if(mode_ != Mode::NormalOperation || reset_delay_) {
return; return;
} }
input_.push_back(value); input_.push_back(value);