iiinova — where your digital self keeps evolving

Bitman6502 @afachat.bsky.social · 30/08/2026

Nice are they here today? We're on the way ...

Bitman6502 @afachat.bsky.social · 19/08/2026

I wouldn't be proud of the code it produces, but as long as it is only test code or does not need specific optimizations, I have no motivation to fix this. You have to check every output though for correctness.

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Bitman6502 @afachat.bsky.social · 19/08/2026

As with all tools, the outcome very much depends on who uses the tool. I find it amazing that Claude can write 6502 assembly as well as VHDL, and gemini can even do schematics.

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Bitman6502 @afachat.bsky.social · 26/07/2026

If anyone wants to jump in and organize something, be my guest. It's all open source

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Bitman6502 @afachat.bsky.social · 26/07/2026

Personally I won't be able to sell items. But the goal is to make it as easy as possible to get 'almost' ready parts from a PCB manufacturer and the rest of the parts from some parts provider. I have about 80% of the parts assembled by a board house at this time, goal is to get >95%.

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Reposted by Bitman6502

VCF Europa @vcfe.bsky.social · 26/05/2026

Schon seit Jahren beschäftigt sich @afachat.bsky.social mit Modernisierung und Verbesserungen für den Commodore PET. Am VCFe Anfang Mai berichtete André vom aktuellen Entwicklungsstand seines Ulti-PET: youtu.be/aH_Fhru66G8 #VCFe #VCFe25 #vintagecomputing #retrocomputing #commodorepet #pet #ultipet

youtu.be

Der Ulti-PET – ein moderner Commodore PET Nachbau – André Fachat

YouTube video by Computeum

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Bitman6502 @afachat.bsky.social · 10/05/2026

First light ... ehm first sector ;-) My UltiPET Commodore PET clone with the UltraBus extender has read its first sector off of an Apple II disk. (Sector content poked to the screen for easier visual inspection). #8bit #mos6502 #apple2 #Commodore

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Bitman6502 @afachat.bsky.social · 30/04/2026

See you tomorrow at the Vintage Computer Festival Europe in Munich! (And Saturday and Sunday!) vcfe.org/D/ #8bit

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Bitman6502 @afachat.bsky.social · 07/04/2026

That was a very enjoyable talk!

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Bitman6502 @afachat.bsky.social · 01/03/2026

Getting a first grip on the #Commodore #C64U command interface ... #8bit

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Bitman6502 @afachat.bsky.social · 18/02/2026

It's not 'the first book of kim' as I recall it exists, but the original manual. It's a reprint organized by a member of the German forum forum.classic-computing.de , only those three were reprinted

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Bitman6502 @afachat.bsky.social · 17/02/2026

Those where the days when the full content of a computer's ROM was printed in the manual!

Start of an assembler language printout in 6502 assembly language with 6530-003 as title

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Bitman6502 @afachat.bsky.social · 17/02/2026

I got myself some reprints for some good feeling of nostalgia! #8bit #mos6502

Picture of three blue handbooks, MOS 6502 programming manual, MOS 6502 hardware manual, and a (German) KIM-1 Handbuch

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Bitman6502 @afachat.bsky.social · 10/02/2026

Talked to him and he explained the reason which I understand. Still a pity. I will look into using the UCI for GeckOS then

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Bitman6502 @afachat.bsky.social · 06/02/2026

I think it would be interesting to investigate if, in the absence of external drives, instead of slowing down the C64, speeding up the drive instead would be possible

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Bitman6502 @afachat.bsky.social · 05/02/2026

I know. But I am building my own FPGA based Commodore PET replica. So, I think it could have been done. I accept if there is a technical reason I don't know, but just 'that's because it was like that' doesn't cut it for me.

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Bitman6502 @afachat.bsky.social · 04/02/2026

Ah well. The VICE emulator - all software though - speeds up the C64 _and_ the disk drive(s) at the same time in warp mode.

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Bitman6502 @afachat.bsky.social · 04/02/2026

Not to spoil the fun - but the VICE emulator speeds up the C64 _and_ the floppy drive in warp mode. Which is very convenient

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Bitman6502 @afachat.bsky.social · 04/02/2026

@commodoreofficial.bsky.social I was wondering, if I speed up the C64 to say 64 MHz, it seems the 1541 emulation is not sped up, but instead the whole machine falls back to the original speed when accessing the disk. Is that intentional? Will that change? Thanks

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Bitman6502 @afachat.bsky.social · 22/01/2026

A Commodore 3032 at school, with a 3040 disk drive even. Never left the PET world it seems 😅

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Reposted by Bitman6502

Ruprecht Polenz @polenz.bsky.social · 18/01/2026

Spahn redet die NATO um Kopf und Kragen und fällt Merz in den Rücken. Die Sicherheit in der Arktis und von Grönland ist ein NATO-Thema. Trump stellt keine Fragen sondern versucht, Dänemark und Grönland zu erpressen. Das ist NICHT „nachvollziehbar“.

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Bitman6502 @afachat.bsky.social · 17/01/2026

I tried but I can't as it seems. You have to DM me ...

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Reposted by Bitman6502

Der Volksverpetzer @volksverpetzer.de · 16/06/2025

Als wir die AfD für ihre verfassungsfeindlichen Ideen von millionenfachen Vertreibungen verurteilten & zu Millionen auf die Straße gegangen sind, fiel sie von 23 % auf 15 %. Seit wir sie "inhaltlich stellen" & "endlich härtere Migrationspolitik" machen, stieg sie von 15 % auf 25 %. Ich sag's nur.

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Bitman6502 @afachat.bsky.social · 09/11/2025

I have resurrected my 36 yr old solution "BDOS" for copying files to/from a PC floppy with a C128 and a VC1571 disk drive, that once was a 64er Project of the month. Follow me on that journey! youtu.be/64XbtP1S5v8 #8bit #mos6502 #commodore #commodore128

youtu.be

Resurrecting BDOS, a file copy solution for PC disks on the Commodore (Ep. 36)

YouTube video by 8bit-times by André Fachat

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Bitman6502 @afachat.bsky.social · 27/09/2025

I'm still looking for a (working!) tool that limits the CPU freq automatically once a temperature limit has been reached.

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Bitman6502 @afachat.bsky.social · 27/09/2025

I actually finally seem to have found a tool to effectively limit the CPU speed and thus avoid overheating....

shows a setting for max CPU frequency set to 1950 MHz, and a temperature graph in the background with 78° max temperature

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Bitman6502 @afachat.bsky.social · 21/09/2025

Some updates on the MicroPET, and impressions from the classic computing 2025 from last weekend! #8bit #mos6502 #8bittimes youtu.be/vvN65JlFd0E

youtu.be

CC2025 and Updates on the MicroPET (Ep.35)

YouTube video by 8bit-times by André Fachat

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Bitman6502 @afachat.bsky.social · 21/09/2025

Rendering my new video is putting stress onto that old machine ... probably time to get a new one ... #8bit #mos6502 #8bittimes

A photo of a part of a screen of a ThinkPad W510 with temperature displays, showing CPU temperature in the range of 80 to 95 degrees Celsius

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Bitman6502 @afachat.bsky.social · 13/09/2025

A Commodore PET with a HSG high speed vector graphics card, where you can play asteroids! #8bit #mos6502 #Commodore

A Commodore 8032 showing the start screen of the Asteroids game

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Bitman6502 @afachat.bsky.social · 13/09/2025

Today in Hof, Germany: the classic computing event with loads of classic machines to see! I'll be presenting my MicroPET Commodore PET clones! #8bit #mos6502 #MicroPET #Commodore @wearecommodore.bsky.social

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Bitman6502 @afachat.bsky.social · 12/09/2025

For being newbie, a great start! I didn't notice! Btw on my mobile, the site banner isn't even showing!

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Bitman6502 @afachat.bsky.social · 11/09/2025

Advertised an article on the Amiga with a picture of an IBM PC? That isn't even in the article as far as I can see? Please....!

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Reposted by Bitman6502

Official Commodore® @commodoreofficial.bsky.social · 12/07/2025

We've been sleeping for 30 years. Please excuse us. Now, the best-selling home computer ever is back. Unplug The Chaos. Return To The Pixel. #wearecommodore www.commodore.net

commodore.net

Home | Commodore

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Reposted by Bitman6502

Francis 🏴‍☠️ Gulotta @reconbot.toot.cafe.ap.brid.gy · 09/08/2025

The absolutely best place to play Space Invaders

A lunar lander is displayed in a dimly lit environment, showcasing its intricate design with reflective materials. In the foreground, a person sits at a commodore PET playing space invaders.

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Bitman6502 @afachat.bsky.social · 15/08/2025

caching changes is basically tracking deltas (if you don't want to compare the whole model on save - that depends on the model size) and a difference only comes in if consecutive changes affect the same parts of the model.2/2

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Bitman6502 @afachat.bsky.social · 15/08/2025

That's another option. You need to weigh in the size of the model, the total runtime, the number of changes per runtime, and how many changes affect the same part of the model. The latter is probably the most important. 1/2

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Bitman6502 @afachat.bsky.social · 15/08/2025

If you have a deterministic model, you only need to save the changes to it in case you do changes. Might be much less data, possibly depending on the amount of erosion. But probably better to compress anyway

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Reposted by Bitman6502

Joe's Computer Museum @museumjoe.bsky.social · 14/08/2025

I love the 6502. You can just look at the code and understand it. (Except for all the weird branching modes, but that's it's own thing) And hooking it up to hardware? Slap a buffer between it and your other chips and it'll just talk to them. To the 6502, everything is a memory location.

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Bitman6502 @afachat.bsky.social · 01/08/2025

Can you keep up with the Commodore?

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Bitman6502 @afachat.bsky.social · 25/07/2025

Actually just know how to build logic circuits from logic equations and registers. And then you just need to learn the formalisms like syntax

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Bitman6502 @afachat.bsky.social · 25/07/2025

Basically VHDL is a way to describe logic equations and registers - basic logic stuff. And most of my VHDL is just like that. The rest is compiler magic

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Bitman6502 @afachat.bsky.social · 24/07/2025

There are certain limitations regarding memory bandwidth that actually made me use C64 like sprites as well. The sprite info needs to be fetched in time, and there are only so many off screen cycles available...

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Bitman6502 @afachat.bsky.social · 24/07/2025

Oh, you're asking about the 'code'? I meant VHDL code I use to program the FPGA

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