Search found 637 matches

by mrtinb
Wed Apr 25, 2018 10:05 pm
Forum: Hardware
Topic: ZXPAND and Lambda 8300?
Replies: 4
Views: 1756

Re: ZXPAND and Lambda 8300?

I want to hardcode the ZXpand ROM for PAL, as the Lambda 8300 has a different PAL/NTSC detection. I changed 02DF: ADD A,1F to 02DF: LD A,37 This makes MARGIN be $37 always which I can read in the disassembled ZX81 ROM is for UK (PAL). The two statements have the same 7 T-states, so timing should be ...
by mrtinb
Tue Apr 24, 2018 8:08 pm
Forum: Sinclair Misc
Topic: Screen highlighting ZX81
Replies: 2
Views: 96

Re: Screen highlighting ZX81

Exactly. Thank you! :-)
by mrtinb
Mon Apr 23, 2018 10:06 pm
Forum: Sinclair Misc
Topic: Screen highlighting ZX81
Replies: 2
Views: 96

Screen highlighting ZX81

I remember a year or more ago someone posted a demo using a ZXpand to show a menu of about 20 selection options. When a letter was pressed on the keyboard a screen was loaded in either text or graphics. Another key would swap between text and graphics. This would show about 20 highlights of ZX81, it...
by mrtinb
Sat Apr 21, 2018 3:55 am
Forum: Development
Topic: ZXpand-Commander
Replies: 90
Views: 7650

Re: ZXpand-Commander

They load fine outside File Commander. So it shouldn’t involve the PIC.
by mrtinb
Fri Apr 20, 2018 4:06 pm
Forum: Development
Topic: ZXpand-Commander
Replies: 90
Views: 7650

Re: ZXpand-Commander

If it’s too complicated to test with E-FILE, then maybe a Force Load command
by mrtinb
Fri Apr 20, 2018 1:06 am
Forum: Development
Topic: ZXpand-Commander
Replies: 90
Views: 7650

Re: ZXpand-Commander

Great program. One thing I miss: Unfortunately Execute does only work on .P files. I have files with different extensions that are ordinary program files. .AS2 ZX Assembler 2 source .TAS Tasword files .WS2 WordSinc II.3 files .BER Berch Assembler source Etc. These cannot be loaded with ZXpand Comman...
by mrtinb
Thu Apr 19, 2018 3:36 pm
Forum: Hardware
Topic: How to repair a ZX81XT extender board (or slot edge connector)
Replies: 5
Views: 318

Re: How to repair a ZX81XT extender board (or slot edge connector)

I have used a ZX81XT to get space between my Lambda 8300 and the ZXBKBv3 keyboard controller I've built. But yesterday all kinds of chars came randomly on the screen, but the computer worked. It was hard to use, as most of the chars on the screen were corrupted. This was very frustrating. Finally I ...
by mrtinb
Mon Apr 16, 2018 3:25 pm
Forum: WANTED
Topic: Looking for a printer
Replies: 4
Views: 256

Re: Looking for a printer

I have a non-working ZX Printer for display, and an Alphacom 32 for printing.
by mrtinb
Mon Apr 16, 2018 8:00 am
Forum: Lambda 8300/ Power 3000 Lounge
Topic: Lambda 8300 pros and cons
Replies: 0
Views: 210

Lambda 8300 pros and cons

Pro Built-in sound Built-in Joystick Executes machine code above memory address 32k (no M1NOT problem) Con Not all hardware extensions work No Hires or Pseudo Hires (WRX, G007, ARX) No User Defined Characters (UDG) External keyboard corrupts load from tape Detection of NTSC/PAL on different I/O-por...
by mrtinb
Sun Apr 15, 2018 11:09 pm
Forum: WANTED
Topic: Looking for a printer
Replies: 4
Views: 256

Re: Looking for a printer

The ZX81 printer that works decade after decade is Alphacom 32 (or in the US: Times Sinclair 2040). There are 5 on sale on eBay. http://r.ebay.com/3deYoi http://r.ebay.com/eBU2vb http://r.ebay.com/AxJ544 http://r.ebay.com/5cHLGT http://r.ebay.com/OCp54t Edit: There are also 3 Timex Sinclair 2040 mod...