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-rw-r--r--src/devices/oprom/x86emu/ops.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/src/devices/oprom/x86emu/ops.c b/src/devices/oprom/x86emu/ops.c
index 70e048dc2f..6bfc71c08c 100644
--- a/src/devices/oprom/x86emu/ops.c
+++ b/src/devices/oprom/x86emu/ops.c
@@ -2058,27 +2058,29 @@ Handles opcode 0x8d
static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1))
{
int mod, rl, rh;
- u16 *srcreg;
uint destoffset;
-/*
- * TODO: Need to handle address size prefix!
- *
- * lea eax,[eax+ebx*2] ??
- */
-
START_OF_INSTR();
DECODE_PRINTF("LEA\t");
FETCH_DECODE_MODRM(mod, rh, rl);
if (mod < 3) {
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- destoffset = decode_rmXX_address(mod, rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *srcreg = (u16)destoffset;
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+ u32 *srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *srcreg = (u32)destoffset;
+ } else {
+ u16 *srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *srcreg = (u16)destoffset;
}
- /* } else { undefined. Do nothing. } */
+ }
+ /* else { undefined. Do nothing. } */
DECODE_CLEAR_SEGOVR();
END_OF_INSTR();
}