diff --git a/src/gba/memory.c b/src/gba/memory.c index 4f7b12274..2eedeb9dd 100644 --- a/src/gba/memory.c +++ b/src/gba/memory.c @@ -1499,9 +1499,11 @@ int32_t GBAMemoryStall(struct ARMCore* cpu, int32_t wait) { int32_t previousLoads = 0; // Don't prefetch too much if we're overlapping with a previous prefetch - uint32_t dist = (memory->lastPrefetchedPc - cpu->gprs[ARM_PC]) >> 1; - if (dist < 8) { - previousLoads = dist; + uint32_t dist = (memory->lastPrefetchedPc - cpu->gprs[ARM_PC]); + int32_t maxLoads = 8; + if (dist < 16) { + previousLoads = dist >> 1; + maxLoads -= previousLoads; } int32_t s = cpu->memory.activeSeqCycles16; @@ -1511,12 +1513,9 @@ int32_t GBAMemoryStall(struct ARMCore* cpu, int32_t wait) { int32_t stall = s; int32_t loads = 1; - if (stall < wait) { - int32_t maxLoads = 8 - previousLoads; - while (stall < wait && loads < maxLoads) { - stall += s; - ++loads; - } + while (stall < wait && loads < maxLoads) { + stall += s; + ++loads; } if (stall > wait) { // The wait cannot take less time than the prefetch stalls