Search found 1284 matches

by mrtinb
Thu Dec 03, 2020 6:54 am
Forum: GAMES
Topic: 1k Games
Replies: 3
Views: 103

Re: 1k Games

WRX hires works out of the box on a 1k ZX81. It’s the 16k RAMpack, that doesn’t support WRX hires. Therefore a simple modification has to be made to the RAMpack to enable WRX hires. You can also build a custom adapter between the ZX81 and RAMpack. Modern RAM-expansions like the ZXpand support WRX ou...
by mrtinb
Wed Dec 02, 2020 1:54 pm
Forum: Development
Topic: ZX81 Clone Tynemouth Minstrel 3
Replies: 48
Views: 22049

Re: ZX81 Clone Tynemouth Minstrel 3

:mrgreen: We've all been there.
by mrtinb
Sun Nov 29, 2020 1:41 pm
Forum: Development
Topic: ZX21 Project ZX81 Replacement PCB
Replies: 26
Views: 1038

Re: ZX21 Project ZX81 Replacement PCB

I was told to use MPS2369 as a replacement, and it works great in my ZX81.
by mrtinb
Fri Nov 27, 2020 5:49 pm
Forum: Hardware
Topic: VP100 replica project started (ZX81 in minitel terminal)
Replies: 8
Views: 424

Re: VP100 replica project started (ZX81 in minitel terminal)

msch wrote: Fri Nov 27, 2020 4:38 pm Hopefully we will see this at the next ZX-Team meeting :D
Yes, I've got some problems to hack before it becomes a reality. But I'm working on it.
by mrtinb
Fri Nov 27, 2020 12:37 pm
Forum: Hardware
Topic: VP100 replica project started (ZX81 in minitel terminal)
Replies: 8
Views: 424

Re: VP100 replica project started (ZX81 in minitel terminal)

I'll try with the current approach. If I can't get it to work, I'll try with a microcontroller.
by mrtinb
Fri Nov 27, 2020 11:50 am
Forum: Hardware
Topic: VP100 replica project started (ZX81 in minitel terminal)
Replies: 8
Views: 424

Re: VP100 replica project started (ZX81 in minitel terminal)

Yes I had already found those pages. That's is my reference for my current prototype pcb.
by mrtinb
Fri Nov 27, 2020 6:49 am
Forum: Hardware
Topic: VP100 replica project started (ZX81 in minitel terminal)
Replies: 8
Views: 424

Re: VP100 replica project started (ZX81 in minitel terminal)

It’s difficult to see if this schematic of the 16k expansion, will also solve the keyboard translation. The chips on the schematic is just labeled Z1 - Z6, so it’s difficult to know what they do. Even if this schematic will solve the keyboard translation, we don’t know that the different terminal mo...
by mrtinb
Thu Nov 26, 2020 10:54 pm
Forum: Hardware
Topic: VP100 replica project started (ZX81 in minitel terminal)
Replies: 8
Views: 424

VP100 replica project started (ZX81 in minitel terminal)

I have admired the French VP100 (ZX81 inside a minitel terminal) for a while, and wanted to recreate one for my own ZX81 use. Minitel bought. Check! Equipment for secure discharge of CRT purchased. Check! Mintel terminal disassembled, minitel pcb and keyboard removed. Check! Keys rearranged on keybo...
by mrtinb
Wed Nov 25, 2020 1:35 pm
Forum: ZX BASIC
Topic: Basic to Assembler
Replies: 2
Views: 287

Re: Basic to Assembler

A subset of Basic can be translated to Machine Code using MCoder II.
by mrtinb
Wed Nov 25, 2020 4:25 am
Forum: Software
Topic: Pascal for ZX81
Replies: 6
Views: 406

Re: Pascal for ZX81

Here is some info about it: I know Pascal. That’s not the issue. The problem is this implementation gives you a 3-letter prompt, Nothing happens no matter what I type. This software seems useless without it’s manual. I’ve looked through the binary both in ascii and zxscii. There’s not recognizable ...