André Fachat @[email protected]

Want to do transactions in the cloud? Sagas are too limited for your use case? Event-based Sagas are difficult to manage? Here's a new approach: extrapages.de/archives/20240…

Save the date - I am presenting my Micro-PET machines at the Toronto PET Users Group call: tpug.ca/2024/09/tpug-m… this sunday 21pm German time / 3pm EDT #8bit #mos6502 #micropet

I created specific playlists for the three main topics on my youtube channel: 1) The Micro-PET computer family: youtube.com/playlist?list=… 2) the GeckOS operating system: youtube.com/playlist?list=… 3) The Commodore PET: youtube.com/playlist?list=… Let me know what you like most! #8bit

Here is a proposed update on the o65 file format. In the proposed 1.3.1 only clarifications are made: github.com/fachat/o65/blo… For ideas for 1.4, pls see and discuss here github.com/fachat/o65/iss… #8bit #mos6502

I had to change the driver to using the Line status register instead of the Interrupt identification register to handle the transfer. Actually makes the driver easier. Not sure why the driver worked on the 16550A and not on the 16752

I have a weird problem with the TL16C752 DUART. I am using my 16550A driver, but it does not seem to be clearing the tx and/or rx ints correctly, even though the IIR handling should be compatible from the datasheet. This throws the driver in a loop. Any experiences/hints? #8bit

@CodingAndThings Easy. The colour of the bricks don't match the colour of the boards. This introduces quantum colour impedance mismatch, which causes all kinds of errors ;-) Good luck with the debugging!

Just saw this. The beginning of a new old game! Brilliantly cool! #8bit #mos6502 #commodorepet youtube.com/watch?v=WAPlSe…

Was der Vizekanzler sagt. NUR so wird #Demokratie unsere Aufgaben und Probleme lösen können, nicht wie #Soeder, #Linnemann und andere, die uns populistisch aufwiegeln wollen. #Habeck

My new video shows how the Commodore PET 8296 creates its video output. An amazing machine with a new architecture. Compatible with the older PETs, but much more capable. A reaction on the Transactor demo is included! #8bit #mos6502 youtu.be/Woa-UbqozD8

@commonmodechonk @CodingAndThings Luckily they extended the life of Spartan 6 to at least 2030 IIRC

@CodingAndThings Yeah Xilinx really clearing up shop on older stuff lately, lots of monies out there for folx who can help migrate to newer stuff it seems

@hacknet I this revision, I moved from a single UART in PLCC to a dual UART (in TQFP unfortunately), to get more I/O options.

@hacknet Typically all original 8250 "PC compatible" UARTs have active high interrupt outputs, and generally a different type of bus interface, causing issues connecting to a 6502 system. But this is the first I see with high impedance after reset ti.com/lit/ds/symlink…

Working on the next revision.... #8bit #mos6502

@gregnacu @CommodoreLad A new SuperCPU would be cool too!

@CommodoreLad I don’t want to speak for them! The CMD HD isn’t currently available for sale, but I believe this is part of the plan. 🤞🏻

Oh my! OH My! Look at what just arrived at my door! This is a *brand new* CMD FD-4000 reproduction by Corei64. They’ve acquired CMD copyrights to build these and more. This is a “visually faithful” modern reproduction with an updated board layout inside. #C64 😁😊🤪🤗😆🥳🤩

In part 2 of my PET video output video series, I look at the PET models with CRTC. That includes high level and deep dive schematics, timing descriptions, and explaining some tricks that are used in demos! youtu.be/2echgDsLhR0 #8bit #mos6502

@Olimex Nice one! But isnt' the claim being 30x faster a little bit exaggerated when the CPU clock is only 6.5 MHz compared to 1980's 1+MHz machines?

World fastest 6502 computer now have all in one PC version wtih plastic box, USB hub, LCD, Lipo battery to run 3 hours without external power, Touch panel mouse, UEXT and GPIO extenders, 6502 bus olimex.wordpress.com/2024/06/25/the… #6502 #retrocomputer #retrogaming

@mass_werk No worries. I'm working "bare metal" here 😉

@afachat Ah, now I get it: PETSCII (what I was refering to) versus screen codes (what you were doing).

A little teaser for my next video.... Do you notice what's "unusual" for a Commodore PET? #8bit #mos6502

@mass_werk Interesting. That must be a ROM / software artifact then. The actual charrom does not have the Pi there.

@afachat Try `PRINT ASC("π")` using the keyboard – this should give 255, which is also the token for Pi. The entire parsing routine relies on this.