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Unused |
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This routine is not used in the standard Spectrum but the code allows for a system reset to occur following activation of the NMI line. The system variable at 5CB0, named here NMIADD, has to have the value zero for the reset to occur.
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| RESET | 0066 | PUSH AF | Save the current values held in these registers. | ||||
| 0067 | PUSH HL | ||||||
| 0068 | LD HL,($5CB0) | The two bytes of NMIADD must both be zero for the reset to occur. | |||||
| 006B | LD A,H | ||||||
| 006C | OR L | ||||||
| 006D | JR NZ,$0070 | Note: this should have been 'JR Z'! | |||||
| 006F | JP (HL) | Jump to START. | |||||
| NO_RESET | 0070 | POP HL | Restore the current values to these registers and return. | ||||
| 0071 | POP AF | ||||||
| 0072 | RETN | ||||||
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