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8-bit acorn hardware • Re: BBC B mostly works with worse power, but not with...
Component suppliers such as Mouser, Farnell, Digikey and RS sell 74LS logic, you don't have to use Texas Instruments, the N of the part just means plastic DIL package. Come to think about it, there is...
View Articlegeneral • Re: Today I received.....
Broken speaker...Apart from the interconnection wiring, what's wrong with it?MarkI don't really know. The tiny wires are connected to the pads, they go down into the speaker and don't look broken or...
View Articleacorn atom and acorn system series • Re: Atom Software Archive
HI Dave,The Hackjunk link was interesting to read, but no PCB CAM files to make a PCB.I was trying to draw up an Atom schematic in Kicad, but did not finish it.Statistics: Posted by derek — Mon May...
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acorn atom and acorn system series • Re: Atom with missing C11
Hi Pete, can you check with your scope the signals on pin 13,12,3 and 4 of IC 9 to see if there is any noise present when pressing BREAK?Maybe IC9 is bad.For testing, you can remove IC1 (6522) or IC25...
View Articlemiscellaneous new bbc and electron games • Re: Teletext Elite (BBC Micro, BBC...
Another great video Colin , thumbs up hereStatistics: Posted by brianmartin_2001 — Mon May 06, 2024 8:40 pm
View Article32-bit acorn software: other • Current versions of modules, etc, for an A5000
Hey all.I have an A5000 that I've had since the '90s, I've kept it intending to get it up and running again (in part to play Elite some more). I had a bit of time over a decade ago but other than...
View Article8-bit acorn hardware • Re: Can anyone program some EPROMs for me
My Logical Devices ChipMaster-6000XPU has that part listed under Waferscale.WS57C43CPM me if you want me to try and program it for you. - Cost you return postage.Dave H.Statistics: Posted by...
View Articlenew projects and releases: text and graphic adventures • Re: Artic Adventure...
Yes, it's pretty rough around the edges at the moment. The plan is to go through it again next weekend and fix this sort of thing. I'm unlikely to have the time or energy before then.Statistics:...
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8-bit acorn hardware • Re: Who else is building a Beeb from scratch?
LOL I need to not drink coffee when putting ICs into sockets... can you spot my further two errors, one prevented MODE7 from working, the other prevented other modes from displaying anything but the...
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32-bit acorn hardware • Re: My A3000 - work done so far (pics only)
And the opening for the RJ45 connector is done and the hole for the LED is drilled:Could have done better (the Dremel and the drill left some scars) , but since I don't have a drill press nor vice for...
View Article32-bit acorn hardware • Re: Aleph-1 PC podule CPU upgrade
Thanks. The only reason why swapping the crystal may not work is that it’s a 20MHz part, so a 25% overclock may be asking a bit much. Certainly clocking a 25Mhz part up to 33 (ie 33% increase) was...
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32-bit acorn hardware • Re: Risc PC600 white screen
This is never a bad sign on a board with battery damage - though it may be worth testing without the VRAM to see if it's affecting VIDC.The not so good news being I already removed it as part of...
View Articlegeneral • Re: How to change directory - in a program
Or, maybe I just don't know how to trap an error on the Native ARM (yet).If programming outside a language environment that allows you to easily install error handlers like BASIC or C, you need to...
View Article8-bit acorn emulators • Re: BeebEm for RG350 (Retro Handheld)
I can’t get beebem running on my RG350M. it doesn`t create the dir structure after the first start.I’ve put the roms in /media/data/local/home/.beebem/roms in both cards and it still complains that it...
View Article8-bit acorn hardware • Re: RGB to HDMI using a Pi Zero and a small CPLD
Good job, I confirm Alpha 65F sounds fine with my monitor that didn't work previously!Thanks for confirming the fixes.I've added a new Alpha 65G which should fix the clicks and pops in the audio which...
View Article8-bit acorn software: other • Re: A new MENU system for MMC/Gotek
The menu is *run so it ignores page. We have seen disc doctor and other ROMs block the commands to the gotek.Either way, disabling all unnecessary ROMs might help. I'll see if I can get a beeb set up...
View Articleintroduce yourself • Re: Hello from Stockholm
Thx!Statistics: Posted by ulften — Wed May 08, 2024 10:49 pm
View Article8-bit acorn hardware • Re: Who else is building a Beeb from scratch?
The RGB2HDMI won't give me a stable MODE7 on these new PCBs. I noticed an issue in the original BOM for the board where C48 is specified as 220pF but the Service Manual gives it as 270pF. I'll pop...
View Articledevelopment tools • Re: BBC Basic COLOUR statement
COLOUR purely and simply sends VDU 17,n to OSWRCH, and NOTHING ELSE. It is *ENTIRELY* the job of the VDU drivers to decide what to do with that VDU sequence and ***NO*** business of any foreground...
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8-bit acorn hardware • Re: Can anyone program some EPROMs for me
Yeah, I saw that thread. Oddly, I've used the same IC, I've never had Vcc up to 6.25V (the absolute maximum is 7V over VIL) and then there's the VPP that needs to spend some time at VIH before jumping...
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