#c128 repair session No. 253726.
Is the Z80 supposed to get hot? It doesn't do anything ..

Question to the #6510 / #C64 #assembly programmers: How do I JSR to a stored address?
Currently I do:
LDA $Funcaddr
STA jmplabel +1
LDA $Funcaddr + 1
STA jmplabel + 2
jmplabel:
JSR $0000

That looks horrible, that can't be a good way to do it..

Spent hours yesterday to get a RL interrupt routine working in C for the #commodore #C128.
The code is .asm, but inside a C function, and the wedge function is also C.

I am now at a point where I think it's not me, is #cc65. The routine did run nicely in pure (acme) assembly.
Next step: Raw .asm include, let's see if that works.

Man, assembly programming is hard work.
#retroprogramming

Got a #playstation1 original controller for 3 € plus shipping by pure luck.
It was a bit dirty and well used, but it works perfectly! :blob_rainbowheart:
And after a thorough cleaning it looks good enough! :rainbow_heart_eyes:

#C128 DCR repair update.
The character shift comes with a (pretty long) interrupt, which is now, thinking about it, probably not too far fetched.
Even if you do nothing at all on the machine, after a while it just starts throwing interrupts out of nowhere.

This is not visible in #C64 mode Oo.

Next steps: Verify that it doesn't happen in C64 mode, and then read circuit diagrams again.
I start to suspect that it's some of the logic chips....

So, I figured out that I am really bad in using separate accounts in the fediverse :-(
So while I am still reading here, most of my toots will be done over at @multitink@chaos.social .
Sorry for that :-)

Playing around with several development environments for the #c64 / #c128. I started off with #acme a year ago or so, but I feel that I am going to be developing too slow in pure assembly, and eventually loose interest.
Next on the list was #XCBASIC , which is awesome, and currently looking at the #cc65 cross compiler.

So its familiar(ish) C vs clunk BASIC, but bad (ish) documentation vs excellent.

And as always, I can't decide -.-
#8bit #retrocomputing

Hm... I really can't wrap my head around working with 2 accounts :-/. Might not have been one of my brightest ideas (and that means a lot! :-D)

https://youtu.be/EHzazhKIbzk so.... Apparently my #commodore #VIC20 #VC20 is rare?
It has quite a low serial number, and it also didn't retrobrite well (out better, got really yellow again within months without sunlight)

Here's a 117 kilobyte JPEG by kgsws. It appears to be a perfectly normal picture, but... (1/2)

That time I found a VERY bad capacitor...

#sidekick64 with a #RaspberryPi 3A. Ok compromise zu the Zero 2W if you don't have one :-)

Linux, anyone?

@Wintermute_BBS so finally assembler after all? :-)

After hours of trying to find out why my #c64 #sidekick64 module doesn't work at all, I noticed that I don't actually own a #RasPi Zero 2, but 1....
So here we go, salvaging a big RasPi 3 and trying with that. Looks horrible, but hey.
More to come :-)

I was ordering parts for my 1581 replica, and believe me or not, the floppy port is the most difficult part to source... -.-
Yes, i could just use pin headers, but....

Played around with a raspberry pi pico on (well, in, really) my #C64 #uEliteBoard64.
I powered it from the 5V rail, it's only pulling like 300mA... (The board has a modern power supply).
Starts, and goes into a reboot loop.
Hm, that's odd. I wonder what its doing? *Checks logs*
Ah, right, i to tries to connect you my WiFi. Yeah, that'll need a couple of 100mA more I guess...
I will probably need to try without :-)

I labeled this drawer 2 years ago.
Cute how I thought that all my #commodore bobs and bits might fit into one drawer 😂