Search found 12 matches

by floydbloke
Wed Jul 21, 2010 4:20 am
Forum: SALES
Topic: ZX80, ZX81, Sinclair Spectrum - Half Size Models
Replies: 1
Views: 3447

ZX80, ZX81, Sinclair Spectrum - Half Size Models

Not quite the real hardware, but someone here in NZ has made and is selling these:
http://www.trademe.co.nz/Computers/Vint ... 740054.htm
by floydbloke
Sat Nov 22, 2008 8:13 am
Forum: Hardware
Topic: Video Problem
Replies: 3
Views: 4598

Re: Video Problem

Some progress I've managed to get hold of all the right bits for version 3 of Andy Rea's mod as described towards the end of this thread: http://forum.tlienhard.com/TS1000/www.ts1000.us/cgi-bin/yabb/YaBB.pl-board=HARDWARE;action=display;num=1158795758.htm No success with version 3 unfortunately, I j...
by floydbloke
Sun Nov 16, 2008 10:46 pm
Forum: Hardware
Topic: Video Problem
Replies: 3
Views: 4598

Re: Video Problem

Thanks for the help as always sirmorris, my symptoms certainly look very much the same as the discussions you pointed me at. I'll check the ULA number when I get home tonight to confirm. (My apologies too, I should really have searched a bit harder than taking the lazy way out by just posting a ques...
by floydbloke
Sun Nov 16, 2008 9:13 am
Forum: Hardware
Topic: Video Problem
Replies: 3
Views: 4598

Video Problem

My father very kindly dug the old Zeddy out of the closet and sent it down to me. In high anticipation I hooked and powered it up, unfortunately to be presented with a screen that looks like this. http://farm4.static.flickr.com/3020/3034390606_1757aa3ca4_o.jpg You can just make out the cursor. When ...
by floydbloke
Wed Nov 12, 2008 8:30 am
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

Thanks to sirmorris' templates, a stunning emulator and a scanned PDF of 'Mastering Machine Code on your ZX81' I've managed to cobble together my first assembly language program so I thought I'd share it. A simple game, based on the Casio mg-888 game-calculator of the same era as the zeddy, of chanc...
by floydbloke
Wed Oct 22, 2008 11:26 pm
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

I'm trying to write a simple game which will end up being standalone in machine code, no basic required. My request is because I'm simply being lazy during testing/debugging, and don't want to retype every time I re-assemble and re-load the P file. About 6 lines of basic that take user input to POKE...
by floydbloke
Wed Oct 22, 2008 5:15 am
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

Great templates sirmorris, thanks.

Quick question,is there any way to append lines of basic code to the .P file.

Or alternatively, what is the most suitable to load some machine code, followed by loading some basic. Do I need to set the RAMTOP and shift my machine code up there?
by floydbloke
Thu Oct 16, 2008 9:26 pm
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

An assembler program (not an emulator as I mistakenly referred to in my initial post, my bad) for the ZX81 written in 1983 by someone called by Bob Berch. See attached. It caught my interest when I first started trawling the InterWeb for ZX81 material prior to being steered toward other tools by you...
by floydbloke
Wed Oct 15, 2008 12:59 am
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

Thanks all

Really good stuff here. It will take me some time (which is, due to work commitments, rather scarce at the moment) to get my head around it. Hopefully you won't mind answering the odd query trickling through from me in the next few weeks.
by floydbloke
Sat Oct 11, 2008 5:12 am
Forum: Development
Topic: Berch's assembler
Replies: 21
Views: 31571

Re: Berch's assembler

Update, I 've just discovered how to load .obj files into EightyOne (stunning piece of work ,that emulator).