32-bit acorn hardware • Re: Recreated A3000 board and ARM2 question
D16 is still the wrong way around, not good for the vidc.IC42 & IC45 should be 74HCT573 (as mentioned previously)IC28 should be 74HC139.IC35 should be 7406 (originally TTl family) - will possibly...
View Article8-bit acorn hardware • Model B issue 4 video fault
Hello,I have an issue 4 model B, it's connected to a TV via a scart / rgb lead. (I know this is ok because it works fine on another BBC B)When you turn it on, it powers up as expected. BUT the text on...
View Article8-bit acorn software: other • Re: Unusual 6502 programming techniques
BIT is a very under-appreciated instruction!It performs a logic AND between the accumulator and the contents of some address in memory (on the NMOS 6502 at least, it can only take a long or short...
View Article8-bit acorn hardware • Re: Model B issue 4 video fault
Is this just one mode or are all modes affected?MarkStatistics: Posted by 1024MAK — Wed Aug 28, 2024 6:40 pm
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acorn atom and acorn system series • Keycaps (again)
Hi,I know there are some similar posts but...I recently bought me an Atom (ser 4) , been busy so don't know if it is functional. No cables, adapter for monitor or PSU with it so need that first.I lack...
View Articlecommunications • Re: the Night Owl BBS *Host up*
Host is UP if anyone fancies calling in .Some new Sysop Blog up on future plansfor those interested.cheersStatistics: Posted by brianmartin_2001 — Wed Aug 28, 2024 7:54 pm
View Articleprogramming • Re: Will doing a mode change twice in a row be noticeable to a...
On a Master Compact connected to a real CRT monitor, repeatedly issuing the same MODE command with the same MODE number that the machine is already in does not appear to cause any difference (apart...
View Article32-bit acorn hardware • Re: Risc PC: Front panel LEDs
Red LEDs typically have a forward voltage of 1.8V to 2.2V. Old green LEDs typically are around 2V to 2.2V. Modern green LEDs may be a bit higher.Blue and white LEDs typically have a forward voltage of...
View Article32-bit acorn software: classic games • Re: Help on The Dungeon or Acorn...
I still have all my old copies of Archimedes World in my garage in a box - if you can tell me which issues to look through - I can see if there is a Dungeon solution. I can't say I remember one - they...
View Article8-bit acorn software: other • Re: file won't run in ADFS (BeebFAX)
Thanks Martin ,seems closer now but getting this error. The file is there in the same directory so I dunno how this is coming up. It the defaults back to the Host menu whereas before the prog crashed...
View Article8-bit acorn hardware • Re: RGB video converter
You can stop if careful with cutters. Teeth work well too, though not recommendedStatistics: Posted by vexorg — Thu Aug 29, 2024 8:45 pm
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new projects in development: games • Re: Apache Valley - possible new...
Thanks TrickyOR'ing onto the background. Its all complicated by double buffering and software scrolling which means I have to erase and re-draw each frame. So:1. Remove all the sprites2. Draw the...
View Articleprogramming • Re: What memory below &E02 Can I use for sprites/code?
Thank you for the replies, I hadn't seen the AllMem.txt before so I am more informed than I was.From this it looks as though &A00 and &B00 are the safest targets? Do I have to do anything to...
View Article8-bit acorn hardware • Re: Help with PRES AP3
I don’t think you need any soldering to fit an EPROM in the Plus 1, but it only supports an 8K 2764 (and gives you the top half, IIRC).There’s a 8K version of the support ROM without TreeCopy but...
View Articlegeneral • which 6502 machine code by terminator 1 ?
i was looking at terminator 1 and did see 6502 code by the cycorg it is not a bbc code because it use likesta a1heor #$a5is it commedore ?? z80 ??Statistics: Posted by duikkie — Sat Aug 31, 2024 7:10 pm
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miscellaneous new bbc and electron games • Re: Inufuto BBC games compilation
I noticed, earlier in the week, that Inufuto had started trotting out a new release across the platforms. Acorn versions are now available Osotos looks very similar to Ascend but has some rather...
View Article8-bit acorn software: games - high scores • Re: High Score Challenge - S23 -...
Sorry to spam this tread, but in case I dont get a chance to post before this one finishes, this is my latest score..Statistics: Posted by fwibbler — Sat Aug 31, 2024 7:29 pm
View Articlegeneral • Re: which 6502 machine code by terminator 1 ?
Apple 2; see https://hackaday.com/2024/04/15/analyzi ... ators-hud/ for exampleStatistics: Posted by sweh — Sat Aug 31, 2024 7:41 pm
View Article8-bit acorn software: other • Re: Is ADFS slower than DFS?
This doesn't sound great as I would expect DD ADFS to be able to read 60% more data in the same time. Or side I miss something?Statistics: Posted by tricky — Sat Aug 31, 2024 8:39 pm
View Article32-bit acorn hardware • Unipod and ADF10 or AEH52
Looking at the following link: -viewtopic.php?hilit=econet%20podule&sta ... 0dac5cbfd0it is feasible to have Econet working through the Unipod Podule, with an appropriate software module.I am...
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