Mercurial > repos > blastem
changeset 1778:30b5952fd32e mame_interp
Get latency between interrupt latch and interrupt acceptance working with Musashi
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Wed, 13 Mar 2019 22:01:22 -0700 |
| parents | 5358a7126b96 |
| children | 0c6d07f91346 |
| files | m68k_core.c musashi/m68kcpu.c |
| diffstat | 2 files changed, 9 insertions(+), 0 deletions(-) [+] |
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--- a/m68k_core.c Wed Mar 13 20:34:24 2019 -0700 +++ b/m68k_core.c Wed Mar 13 22:01:22 2019 -0700 @@ -1287,6 +1287,7 @@ #endif context->int_cycle = CYCLE_NEVER; + context->int_pending = 255; context->status = 0x27; context->reset_handler = (code_ptr)reset_handler; return context;
--- a/musashi/m68kcpu.c Wed Mar 13 20:34:24 2019 -0700 +++ b/musashi/m68kcpu.c Wed Mar 13 22:01:22 2019 -0700 @@ -898,9 +898,17 @@ /* If we are halted, don't do anything */ if(this->stopped) return; + + if (this->c.int_pending == 255) { + this->c.int_pending = int_level; + return; + } else { + int_level = this->c.int_pending; + } /* Acknowledge the interrupt */ this->c.int_ack = int_level; + this->c.int_pending = 255; vector = M68K_INT_ACK_AUTOVECTOR;//int_ack_callback(*this, int_level);