Search found 1556 matches

by Andy Rea
Tue May 13, 2008 8:06 am
Forum: Emulators
Topic: EightyOne 1.0
Replies: 37
Views: 19886

Re: EightyOne 1.0

This Is For Sirmorris Then, regarding The Debugger perhaps something like this :- http://i243.photobucket.com/albums/ff60/andy_rea/ar81b.jpg past instructions at the top current instruction highlighted, upcoming instruction below, top register display current, bottom after current instruction. Pleas...
by Andy Rea
Mon May 12, 2008 6:35 pm
Forum: Emulators
Topic: EightyOne 1.0
Replies: 37
Views: 19886

Re: EightyOne 1.0

Whoops! (Keymapping)
<Goes to hide in corner in shame :? >
sorry was on an older version :twisted:
</come out of corner>

Andy
by Andy Rea
Mon May 12, 2008 5:06 pm
Forum: Emulators
Topic: EightyOne 1.0
Replies: 37
Views: 19886

Re: EightyOne 1.0

Forgot to mention in my previous post a feature i would like, The effects of the next instruction on the registers with altered registers highlighted (perhaps switch off-able, i get confused as to which set i'm supposed to be looking at) And 1 more which i thought about in the meantime and would onl...
by Andy Rea
Mon May 12, 2008 1:58 pm
Forum: Emulators
Topic: EightyOne 1.0
Replies: 37
Views: 19886

Re: EightyOne 1.0

Firstly A big thanks to Mike for EightyOne, it's a great emulator tha i almost always use for ZX81 tasks, I'm working with - or should that be pestering ;) - Mike with the aim of improving EO's debugging facilities. I'm hoping to implement some or all of the following: memory display with changed by...
by Andy Rea
Sat May 10, 2008 12:23 am
Forum: Development
Topic: Very simple IO board
Replies: 8
Views: 5976

Re: Very simple IO board

more chips equals more functionallity, it's a more elegant decoding scheme for sure. Nice one Sir Morris.

Regards Andy
by Andy Rea
Fri May 09, 2008 9:09 pm
Forum: Development
Topic: Very simple IO board
Replies: 8
Views: 5976

Re: Very simple IO board

as i posted earlier today i designed and built a simple IO for ZX81 using just 3 IC's A 74ls32 , A 74ls273, and a 74ls245. http://homepage.ntlworld.com/deborah.clayton1/pics/zxio-b.jpg that image shows the output(top ic 74ls273), connected to the inputs (bottom ic 74ls245) making it a psuedo 8 bit b...