8-bit acorn hardware • Re: Checkmate Retro Monitor and Acorn Electron
Does this monitor work with all the different video MODEs? MODE 7 (Teletext), the default for a Beeb is significantly different to the other video MODEs, and this affects the timing of the sync signal...
View Article8-bit acorn software: other • Re: ADFS for multiple SCSI drives
And my Acorn Winchester 130 with drive 0 only:<---SNIP--->I'm not sure how much of this timing is the Adaptec controller and how much ADFS. I suspect it's a combination of multiple retries by...
View Article8-bit acorn hardware • Re: Electron Plus 3 - how best to invert drive identity
The way I made it work in the end was…Replace the cable between the Plus 3 internal drive socket and the internal floppy drive with a new cable, with lines 10 and 12 selectively swappable with a DPDT...
View Article32-bit acorn hardware • Re: (Probably Silly) Mod Ideas for A3010
The Commodore PSU uses a series pass voltage regulator, but the manufacturer encapsulated it in resin. Unfortunately when subjected to stress (thermal cycling) especially when the PSU has insufficient...
View Article32-bit acorn software: RISC iX • Re: Adventures in A680 RiscIx
They've confirmed that the A680 drive format isn't typical. To the point that SCSIDM can't recognise/do anything with it. They were built from the "shoebox" - an external SCSI drive that hooked up to...
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programming • Re: Assembling large code
I took a different approach to the save/reload variables issue and wrote: https://github.com/SteveFosdick/vsaveSome notes: LDA #&40 ; Open the file for writing(cough!) reading! BRK DB 0 ASC...
View Articleprogramming • Re: Basic files from assembly?
In the Autosave thread mentioned, part of the code sets up an OSFILE call to save the BASIC program in current memory, by reading the value of "PAGE" using an OSBYTE call, and reading the value of...
View Articleacorn & bbc micro user group (abug) events • Re: NOW FULL! Booking...
Did these get dumped? No worries if not, just following up in case I missed them somewhere.I dumped something, then forgot about rhem.Rom images and PCB pics attached.Thanks, I was expecting a LBP-8...
View Articleacorn atom and acorn system series • Re: Incoming Acorn Atom Issue 5 Replica
A quick update on progress with the second version of the replica. I'll post a few shots here, and I have a few questions to ask which I'll do on seperate threads.It's taken me a while, but I finally...
View Articleacorn atom and acorn system series • ROMRAM Board & running other ROM images
General question:I have Phill's ROMRAM board which is running the AtoMMC ROM perfectly.With that ROMRAM board, how do I access other ROM images from the command line?Also - how do I access the ROMs...
View Articleacorn atom and acorn system series • 6522 PIA & 2x CPU clock
When using the high-speed CPU offered by the combination of the ROMRAM and Colour boards, I understand that the 6522 PIA should be present. Should it's IRQ jumper be open or closed normally in that...
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software & utilities for the pc, mac or unix • Re: CSW format information...
And another. This all appears to be a previous bug I didn't actually finish fixing properly.Code: --- /tmp/csw.c2025-02-09 22:28:23.000000000 +0000+++ src/csw.c2025-02-09 22:35:56.000000000 +0000@@...
View Articleacorn atom and acorn system series • 2x CPU Clock - Chuckie Egg & Colour...
Using the 2x CPU clock speed, I have noticed a few things.Firstly, with Chuckie Egg, when using 1x CPU speed, the game plays properly, but I get a glitchy screen.ChuckieGlitches.jpgIf, however, I...
View Articleacorn atom and acorn system series • Re: 2x CPU Clock - Chuckie Egg &...
My first guess is that the 8255 is not fast enough. Recently somebody on this forum got good results with a 82C55 in a 2 MHz Atom. Try another brand 8255 if you have any spares.Statistics: Posted by...
View Article32-bit acorn hardware • Re: RiscPC Sound problems
Hi Ian, tested Pin 1 and 10 and has sound in only one chnanel too.Statistics: Posted by o0Nosferatu0o — Mon Feb 10, 2025 9:10 pm
View Article8-bit acorn hardware • Re: Help from someone who has a laserdisc system
Here's mine:vlcsnap-2025-02-10-21h42m37s566.pngvlcsnap-2025-02-10-21h43m16s098.pngStatistics: Posted by BeebMaster — Mon Feb 10, 2025 9:51 pm
View Articleprogramming • Re: Assembling large code
I took a different approach to the save/reload variables issue and wrote: https://github.com/SteveFosdick/vsaveSome notes:should be error number 214, and "Can't load file" or "File not found".Thanks...
View Articlemiscellaneous new bbc and electron games • Re: Slot Machine
Haven't tried it yet, but one thing I really like is the use of a Teletext graphics character to form a sort of chunky underscore character for highlighting keypress shortcuts on the start...
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8-bit acorn hardware • I/F BOARD BBC PCB 1994
Hi, I made this I/F BOARD BBC board in 1994 but struggling to find any information on it. I still have the original acetate somewhere !!! It was a popular PCB in college around that time where we were...
View Article32-bit acorn hardware • Re: Disc error 04 at :0/00000000 on previously...
Thanks for the suggestion, Boydie, but unfortunately this didn't work. I'll try spraying some contact-cleaner on it, but it's still giving the same error after taking it out and pushing it back in....
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