Search found 2695 matches

by sirmorris
Mon Dec 11, 2017 10:21 am
Forum: Hardware
Topic: ZX81 rebuild
Replies: 104
Views: 2405

Re: ZX81 rebuild

Rule the third:
'there's always one more'
by sirmorris
Sun Dec 10, 2017 4:32 pm
Forum: Software
Topic: Campus LIsP (32K)
Replies: 21
Views: 966

Re: Campus LIsP (32K)

As Martin said. There are further facilities for loading and saving blocks of data in memory. The manual is here.
by sirmorris
Thu Dec 07, 2017 9:03 pm
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 60
Views: 2016

Re: Improving Timex/Sinclair Tape Loading

Not my finest hour but I think it will work as a proof of concept. This is now trimmed, drilled and on its way to a certain Boffin. IMG_4284.jpg I had some issues with my laminator, it was sticking, and consequently I've got a couple of broken traces but these have been highlighted and are easy to f...
by sirmorris
Thu Dec 07, 2017 8:58 pm
Forum: Development
Topic: ZX80-help needed!
Replies: 6
Views: 159

Re: ZX80-help needed!

Awesome work as always, Adam!
by sirmorris
Thu Dec 07, 2017 2:22 pm
Forum: Hardware
Topic: ZX81 rebuild
Replies: 104
Views: 2405

Re: ZX81 rebuild

Did you change resistor values?
by sirmorris
Thu Dec 07, 2017 11:01 am
Forum: Development
Topic: ZX80 development thread
Replies: 3
Views: 62

Re: ZX80 development thread

I think that's a great idea - you may just spark an interest in coding for this challenging machine!
by sirmorris
Wed Dec 06, 2017 9:48 pm
Forum: SALES
Topic: Save me from the landfill!
Replies: 8
Views: 204

Re: Save me from the landfill!

8-) Thanks for ensuring it didn't!
by sirmorris
Wed Dec 06, 2017 7:28 am
Forum: Emulators
Topic: ZX80 Program Listing to text file
Replies: 12
Views: 206

Re: ZX80 Program Listing to text file

^^ What Paul said.

Also, if you're so inclined to mod the program anyway then good starting points are:

Description of system variables in a side-by-side form from Mastering Machine Code

The never-ending gift of the no-cash docs describing the P and O file layouts (and everything else as well)
by sirmorris
Tue Dec 05, 2017 11:07 pm
Forum: Emulators
Topic: ZX80 Program Listing to text file
Replies: 12
Views: 206

Re: ZX80 Program Listing to text file

The ZX80 w/4k ROM and ZX81 have different memory layouts and you'll need to look into these differences, documented in the respective manuals, in order to make the necessary changes to p2txt. Don't be scared, it should be quite fun and educational ;)
by sirmorris
Tue Dec 05, 2017 6:59 pm
Forum: Hardware
Topic: Improving Timex/Sinclair Tape Loading
Replies: 60
Views: 2016

Re: Improving Timex/Sinclair Tape Loading

But in the meantime, here are the eagle files I've worked on so far, also the schematic in pdf format if people want to check it against the original in the magazine.
dubber.png
dubber.png (19.82 KiB) Viewed 75 times
dubber.pdf
(51.91 KiB) Downloaded 6 times