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