Gate off vraminuse, oaminuse, etc with wehther the LCD is powered on. Make sure to...
[fpgaboy.git] / insn_bit.v
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decafd62
JW
1`ifdef EXECUTE
2 `INSN_BIT: begin
3 if ((opcode[2:0] == `INSN_reg_dHL) && (cycle == 0)) begin
4 `EXEC_READ(`_HL)
5 end else if ((opcode[2:0] == `INSN_reg_dHL) && (cycle == 2)) begin
6 `EXEC_NEWCYCLE
7 end else begin
8 case (opcode[2:0])
9 `INSN_reg_A: tmp <= `_A;
10 `INSN_reg_B: tmp <= `_B;
11 `INSN_reg_C: tmp <= `_C;
12 `INSN_reg_D: tmp <= `_D;
13 `INSN_reg_E: tmp <= `_E;
14 `INSN_reg_H: tmp <= `_H;
15 `INSN_reg_L: tmp <= `_L;
16 `INSN_reg_dHL: tmp <= rdata;
17 endcase
18 if (opcode[2:0] != `INSN_reg_dHL) begin
19 `EXEC_NEWCYCLE
20 end
21 end
22 end
23`endif
24
25`ifdef WRITEBACK
26 `INSN_BIT: begin
27 if ((opcode[2:0] != `INSN_reg_dHL) || (cycle == 1))
28 `_F <= {~tmp[opcode[5:3]], 2'b01, `_F[4:0]};
29 end
30`endif
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