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Commit | Line | Data |
---|---|---|
1 | `define INSN_LDBCDE_A 9'b0000xx010 | |
2 | ||
3 | `ifdef EXECUTE | |
4 | `INSN_LDBCDE_A: begin | |
5 | case (cycle) | |
6 | 0: if (opcode[3]) begin | |
7 | if (opcode[4]) begin `EXEC_READ(`_DE) end | |
8 | else begin `EXEC_READ(`_BC) end | |
9 | end else begin | |
10 | if (opcode[4]) begin `EXEC_WRITE(`_DE, `_A) end | |
11 | else begin `EXEC_WRITE(`_BC, `_A) end | |
12 | end | |
13 | 1: begin | |
14 | `EXEC_INC_PC | |
15 | `EXEC_NEWCYCLE | |
16 | end | |
17 | endcase | |
18 | end | |
19 | `endif | |
20 | ||
21 | `ifdef WRITEBACK | |
22 | `INSN_LDBCDE_A: begin | |
23 | case (cycle) | |
24 | 0: begin end | |
25 | 1: if (opcode[3]) `_A <= rdata; | |
26 | endcase | |
27 | end | |
28 | `endif |