8-bit acorn software: other • Re: DFS 2.45 ROM layout
I've poked at my DFS 2.45 disassembly a bit more, and I'm increasingly confident that it doesn't call into ADFS...Referring to my post above about how the transfer of control works, I searched for the...
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new ideas wishlist & general chat • Re: More Boulder Dash!
Convert hex value to binary valueFirst 5 bits are the number of ground squaresNext 3 bits represent the number of the last object which is translated:0 = space, 1 = ground, 2 = wall, 3 = ground, 4 =...
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8-bit acorn emulators • Re: Sound Hardware Questions
The Master 128 uses a different arrangement to the Beeb.But the Master Compact and the Memotech MTX use far simpler circuits:MarkStatistics: Posted by 1024MAK — Mon Jan 22, 2024 12:54 am
View Article8-bit acorn hardware • Re: Master RGB socket
Yeah, that sucks. The 8200 isn't 5V tolerant whereas the 8219 is. The new schematic also plays the game of juggling the pins on the internal RGB video header (PL13) and doesn't show the R, G, B, sync...
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8-bit acorn hardware • Re: Who else is building a Beeb from scratch?
It lives! Well the reset and clock work. 44mA at 5V so no horrors yet Congrats! I love the look of these boards. Thanks. I'm trying a different approach with the next two by fitting resistors in value...
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8-bit acorn hardware • Re: Raspberry Pi inside BBC Master (not a second...
It would be straightforward to convert a BBC Micro keyboard to USB using STM32 or a PiPico. A few years back it was done using an Arduino https://ma.ax/keyboard/arduino/projects ... -keyboard/Yeah...
View Article8-bit acorn hardware • Re: Master Battery
Just a thought, but those Lithium-Manganese Dioxide have lithium metal as the anode and their service life ends at 2V when around 30% of the lithium metal remains. Maybe enough for...
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8-bit acorn software: games - high scores • Re: High Score Challenge - S22 -...
I wondered if left handed people were better at this layout. I'm right handed and I might as well cut my left hand off trying to get it to do D and F I did think of an idea like the old German WW2...
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8-bit acorn software: games - high scores • Re: High Score Challenge - S22 -...
Starter score - haven’t played this for so long!Statistics: Posted by klintworth — Mon Jan 22, 2024 10:16 pm
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new projects in development: games • Re: Ghostbusters (Activision)
This seems to hanging together very well now!Wasn't there a plan to have the cars be able to speed up and down? I guess I probably misunderstood at the time. Not like it'd add anything to gameplay.Can...
View Articlescanning of books, magazines, ads and letters • Re: How many sold? German...
Out of interest, why the A5000 in particular?Statistics: Posted by SarahWalker — Mon Jan 22, 2024 10:22 pm
View Article8-bit acorn software: other • Re: Speeding up Z80 BBC BASIC
more details please!Richard has said in the past that the Z80 version wasn't expected to be an especially fast implementation. That doesn't explain why v3 might be slower than v2, but it does offer...
View Article32-bit acorn hardware • Re: SJ Research Nexus pin out?
Haven't really moved on much further at the moment but the files posted by Andrew look interesting, thanks.I've discovered that the reason the Nexus cards don't work on RISC OS 4 is possibly because...
View Article8-bit acorn software: classic games • Re: Elite-A: now working on the BBC...
Hi Mark, another much appreciated update! I tried this out an a real Model B with mmfs and a Beebfpga with mmfs but I don't seem to be able to get the encyclopedia or other disc accessing stuff...
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programming • Re: Picture to .ADL
These steps worked for me:...You're very kind!I found I was doing right, you helped me to double check it, the issue was... just a soft break after Welcome disk .I dunno if Welcome or the Sprite ROM...
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8-bit acorn hardware • Re: Master RGB socket
Well, I've been caught out with this as well when reverse engineering the Acorn A4 Econet module. And I'm sure I'm not alone:I think I've spotted the problem. I've got the As & Bs crossed on the...
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acorn & bbc micro user group (abug) events • Re: Booking thread: ABUG...
Is anyone interested in seeing an Apple II Europlus up and running?Alternatively if I've just committed an act of heresy by asking, you'll find the pitchforks and torches by the door, Mavis is serving...
View Article8-bit acorn hardware • Re: ADJI Testing and Results
I've been poking at the ROM code a bit... main new feature is that you can use *JKEYS with key names so you can do something like "*JKEYS 1 : / Z X RETURN SHIFT O &150" and it'll do what you...
View Article8-bit acorn hardware • Re: Faulty Cassette Port - not loading
Play your file as normal and the signal should appear on the output of IC35 pin#1 - this is fed into a couple of transistors - if either of these fail then the output of IC35 pin#1 will be shorted...
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new projects in development: games • Re: Japanese Military Chess for the BBC...
Anyway, your posts are perfect for people like me coming from high level languages. I've learned a lot of stuff the best way. I'd like for more coders to do the same.Thanks! I'm glad you're enjoying...
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