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a89a3da77a
byuu says: Alright, well interrupts are in. At least Vblank is. I also fixed a bug in vector() indexing, MoDRM mod!=3&®==6 using SS instead of DS, opcodes a0-a3 allowing segment override, and added the "irq_disable" stuff to the relevant opcodes to suppress IRQs after certain instructions. But unfortunately ... still no go on Riviera. It's not reading any unmapped ports, and although it enables Vblank IRQs and they set port $b4's status bit, the game never sets the IE flag, so no interrupts ever actually fire. The game does indeed appear to be sitting in a rather huge loop, which is probably dependent upon some RAM variable being set from the Vblank IRQ, but I don't know how I'm supposed to be triggering it. ... I'm really quite stumped here >_> |
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