sux.h: Add bitmask for b register addressing mode.

1 files changed, 1 insertions, 0 deletions

diff --git a/sux.h b/sux.h
index 4088629..b14d57d 100644
--- a/sux.h
+++ b/sux.h
@@ -1836,6 +1836,7 @@ static /*inline*/ void inst_##op(struct sux *cpu, uint8_t prefix, uint8_t size,
 	t(5, 0x00010001, 0x00010001, 0x00010001, 0x00010001, 0x40014200, 0x00000200, 0x02000200, 0x02000201) { reg = (uint64_t *)&cpu->ps.u8[thread]; } /* php, test/set/clear flags, and interrupts. */ \
 	t(7, 0x07470371, 0x03470171, 0x14171561, 0x00171161, 0x10170360, 0x00160160, 0x00160160, 0x00160160) { tmp = read_value(cpu, 0, addr, rs, inc_clk, 1); } /* Read data from memory. */ \
 	t(0, 0x00000006, 0x00000006, 0x00000006, 0x00000006, 0x00000016, 0x00000016, 0x00000016, 0x00000016) { tmp = read_value(cpu, 0, cpu->pc, rs, inc_clk, 0); cpu->pc += rs+1; } /* Immediate data. */ \
+	t(0, 0x00200000, 0x00200000, 0x00200000, 0x00600000, 0x00600000, 0x00600000, 0x00600000, 0x00600000) { tmp = cpu->b; } /* Use B register as operand. */ \
 	t(7, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000200, 0x00000000, 0x00000000, 0x00000000) { addr = tmp; } /* Interrupts. */ \
 	/* Setup register transfers. */ \
 	t(0, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000400, 0x00000400, 0x00000400) { reg2 = &cpu->a; } /* tab, tax, tay. */ \