| Unused

00102: THE 'NON-MASKABLE INTERRUPT' ROUTINE

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.
RESET | 00102 | PUSH AF | Save the current values held in these registers.
| 00103 | PUSH HL
| 00104 | LD HL,(23728) | The two bytes of NMIADD must both be zero for the reset to occur.
| 00107 | LD A,H
| 00108 | OR L
| 00109 | JR NZ,112 | Note: this should have been 'JR Z'!
| 00111 | JP (HL) | Jump to START.
NO_RESET | 00112 | POP HL | Restore the current values to these registers and return.
| 00113 | POP AF
| 00114 | RETN