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https://opencores.org/ocsvn/mc6803/mc6803/trunk
[/] [mc6803/] [trunk/] [6801_core.sv] - Diff between revs 2 and 3
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| Rev 2 |
Rev 3 |
| Line 671... |
Line 671... |
//
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//
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case (alu_ctrl)
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case (alu_ctrl)
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alu_add8, alu_adc:
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alu_add8, alu_adc:
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cc_out[CBIT] = (left[7] & right[7]) | (left[7] & ~out_alu[7]) | (right[7] & ~out_alu[7]);
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cc_out[CBIT] = (left[7] & right[7]) | (left[7] & ~out_alu[7]) | (right[7] & ~out_alu[7]);
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alu_sub8, alu_sbc:
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alu_sub8, alu_sbc:
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cc_out[CBIT] = ((~left[7]) & right[7]) | ((left[7]) & out_alu[7]) | (right[7] & out_alu[7]);
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cc_out[CBIT] = ((~left[7]) & right[7]) | ((~left[7]) & out_alu[7]) | (right[7] & out_alu[7]);
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alu_add16:
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alu_add16:
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cc_out[CBIT] = (left[15] & right[15]) | (left[15] & ~out_alu[15]) | (right[15] & ~out_alu[15]);
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cc_out[CBIT] = (left[15] & right[15]) | (left[15] & ~out_alu[15]) | (right[15] & ~out_alu[15]);
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alu_sub16:
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alu_sub16:
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cc_out[CBIT] = ((~left[15]) & right[15]) | ((~left[15]) & out_alu[15]) | (right[15] & out_alu[15]);
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cc_out[CBIT] = ((~left[15]) & right[15]) | ((~left[15]) & out_alu[15]) | (right[15] & out_alu[15]);
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alu_ror8 , alu_lsr16, alu_lsr8, alu_asr8:
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alu_ror8 , alu_lsr16, alu_lsr8, alu_asr8:
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