3 ms·
Cool, that's a pretty weird/neat hack. How come you know about how it was implemented?
by seanwilson 6y ago
Cool, that's a pretty weird/neat hack. How come you know about how it was implemented?
- unnah 6y agoThe Amstrad CPC firmware manual was for sale back then, but it's freely available now: http://www.cantrell.org.uk/david/tech/cpc/cpc-firmware/ http://www.cantrell.org.uk/david/tech/cpc/cpc-firmware/ In particular, there's the following note about TXT UNWRITE in the Indirections section: "This routine works by comparing the image on the screen with the character matrices; therefore if the character matrices have been altered the routine may not find a readable a character"