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-rw-r--r--68kinst.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/68kinst.c b/68kinst.c
index 5f7e549..b246e3f 100644
--- a/68kinst.c
+++ b/68kinst.c
@@ -907,7 +907,7 @@ uint16_t * m68k_decode(uint16_t * istream, m68kinst * decoded, uint32_t address)
}
} else {
decoded->op = M68K_AND;
- decoded->extra.size = (*istream >> 6);
+ decoded->extra.size = (*istream >> 6) & 0x3;
decoded->src.addr_mode = MODE_REG;
decoded->src.params.regs.pri = m68k_reg_quick_field(*istream);
istream = m68k_decode_op(istream, decoded->extra.size, &(decoded->dst));
@@ -921,7 +921,7 @@ uint16_t * m68k_decode(uint16_t * istream, m68kinst * decoded, uint32_t address)
istream = m68k_decode_op(istream, OPSIZE_WORD, &(decoded->src));
} else {
decoded->op = M68K_AND;
- decoded->extra.size = (*istream >> 6);
+ decoded->extra.size = (*istream >> 6) & 0x3;
decoded->dst.addr_mode = MODE_REG;
decoded->dst.params.regs.pri = m68k_reg_quick_field(*istream);
istream = m68k_decode_op(istream, decoded->extra.size, &(decoded->src));