step z/a / 0xD6
| Property | Definition |
|---|---|
| OP | 0xD6 |
| Operands | D,S2,S1 |
| Operation | Even updates Z 21I.11F; odd Alpha 16I.16F. Also adds operands into RISC destination. Illegal when DrawCtl[3:0]=11. Other color/coordinate formats 16I.16F. |
| Timing | Count → draw hazard 1; XShadow → parallel draw hazard 1; triangle shadow destination → step hazard 2 |
Instruction hazards · Instruction formats
Source: Technical Spec, p.12