David_M
Veteran Member
I have a very sick model 1 that is proving to be a pain to repair due to cut tracks and other issues due to old bad mods (not mine).
I'm toying with building a card that will plug onto the expansion connector (possibly cpu socket) to allow an external processor to manipulate the board for diagnostic purposes.
Effectively an in circuit emulator that can diagnose ROM, RAM, video or bus issues. I know how to build the hardware and writing the code shouldn't be a problem but I've not laid out a pcb before.
I'm split between using a z80 with ROM, RAM a handful of ttl chips and a 16x2 LCD display or an 8951 with a few ttl chips using a serial link as the interface.
What I'd like to know is there any interest in owning such a beast and is anyone interested in collaborating on designing and producing the hardware?
I'm toying with building a card that will plug onto the expansion connector (possibly cpu socket) to allow an external processor to manipulate the board for diagnostic purposes.
Effectively an in circuit emulator that can diagnose ROM, RAM, video or bus issues. I know how to build the hardware and writing the code shouldn't be a problem but I've not laid out a pcb before.
I'm split between using a z80 with ROM, RAM a handful of ttl chips and a 16x2 LCD display or an 8951 with a few ttl chips using a serial link as the interface.
What I'd like to know is there any interest in owning such a beast and is anyone interested in collaborating on designing and producing the hardware?