ZX External ROM

£13.00

Availability: 3 in stock

SKU: zx-external-rom Category:

ZX External ROM

 

This is a ZX External ROM with a W27C512 ROM loaded with 4 diagnostic tools.
Each ROM can be selected by using the DIP switch.
The W27C512  is electrically erasable so can be reprogrammed with other ROMs using a suitable programmer like the TL866
DIP Switch:

 

 

1 2 ROM
OFF OFF Retroleum DiagROM v1.56
OFF ON Sinclair ZX Spectrum Test ROM
ON OFF Brendan Alford Diagnostics 0.36D
ON ON 128 RAM Tester
The board features a reset button, as well as a enable/disable button.
Setting to disable will allow booting from the ZX Spectrum  and disable the external ROM.
Works with the ZX Spectrum 16k / 48k / 48k + / 128k / + 2 / +2A / +2B
Diag 0.36D Spectrum Tester 128 Tester DiagROM