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Pull interrupt to start of hsync.

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This commit is contained in:
Thomas Harte 2024-09-12 20:45:28 -04:00
parent 60bd877ed9
commit 63d501b629
1 changed files with 1 additions and 1 deletions
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Machines/AmstradCPC/AmstradCPC.cpp
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@ -305,7 +305,7 @@ class CRTCBusHandler {
// Per Interrupts in the CPC: "to be confirmed: does gate array count positive or negative edge transitions of HSYNC signal?"; // Per Interrupts in the CPC: "to be confirmed: does gate array count positive or negative edge transitions of HSYNC signal?";
// if you take it as given that display mode is latched as a result of hsync then Pipe Mania seems to imply that the count // if you take it as given that display mode is latched as a result of hsync then Pipe Mania seems to imply that the count
// occurs on a leading edge and the mode lock on a trailing. // occurs on a leading edge and the mode lock on a trailing.
if(was_hsync_ && !state.hsync) { if(!was_hsync_ && state.hsync) {
interrupt_timer_.signal_hsync(); interrupt_timer_.signal_hsync();
} }