Tim · @timrb
62 followers · 109 posts · Server aus.social

The C16 is cleaned and reassembled. Not pictured is the filthy Datasette that will be restored at a later date. I haven't installed the diode to allow it to work yet anyway. I'll probably pop that in when I upgrade the RAM.

This was such a satisfying repair. The machine had a blown fuse and a dead CPU. I'm just happy the TED chip was not destroyed as that would have been harder/more expensive to work around.

#commodore16 #commodorecomputer #retrocomputing #retrogaming #electronics #8bitcomputer #repair

Last updated 3 years ago

Tim · @timrb
62 followers · 108 posts · Server aus.social

Last night I spent some time building an adapter to connect the C64 6510 CPU to the C16. I burnt a modified KERNAL ROM image from Andy @ hackjunk.com and was surprised to see I still couldn't access my Pi1541.

Silly me naïvely didn't follow the wiring diagrams for the CPU adapter and just sort of wired the external registers with a "near enough is good enough" approach, P0 to P0, P1 to P1 etc. A couple of the registers are actually supposed to be swapped over.

After correcting my mistake, the C16 boots! I've given the case a wash and pulled the keycaps off. The keyboard fully works but it is filthy.

To do:
Clean keycaps and reassemble case
Install diode for cassette motor line
Look into modding to increase RAM to 64k
Clean and repair datasette and joystick

#cbm #commodore16 #commodorecomputer #8bitcomputer #8bitcomputing #retrocomputers #retrocomputing #electronics

Last updated 3 years ago

Tim · @timrb
55 followers · 104 posts · Server aus.social

Another C64 back from the dead! This one arrived to me with a black screen and no indicators from the dead test.

Bad RAM, all but one of the MT brand ICs was dead, then one of my new old stock RAM ICs had a stuck address line. The KERNAL is dead as well so I'll have to make an adaptor for the 27C64 EPROM I put in its place (currently breadboarded). The SID seems to a bit tired too with one of the channels sounding off.


#8bitcomputer #8bitcomputing #commodore64 #commodoreforever #retrocomputing #retrocomputers #c64repair

Last updated 3 years ago

Jim Donegan ✅ · @jimdonegan
1385 followers · 3756 posts · Server mastodon.scot
Tim · @timrb
50 followers · 98 posts · Server aus.social

TED is not dead! After trying to diagnose this Commodore 16 I noticed the 8501 CPU was getting red hot. I had a spare 6510 in one of my parts boxes and rigged it up on a breadboard to substitute in for the original CPU and it came to life!

#commodore16 #retrocomputers #retrocomputing #8bitcomputer

Last updated 3 years ago

Tim · @timrb
47 followers · 96 posts · Server aus.social

I decided this morning I would test the I got the other day and see what condition it's in. The case is in good shape. Powering the system on gave me a power LED, but no video. After putting in the deadtest cart and wiggling the switch I got a black screen, but no test screen or flashes.

The case screws are worn and after taking off the cardboard RF shield it's even more evident that someone has been inside. A couple of the failure-prone MT 4264 RAM chips have been replaced with 4164 and 8264 chips. Only one RAM chip is socketed.

I noticed U4 KERNAL ROM was getting hot, so I removed it and got a 5 flashes l, but also 2 flashes from the deadtest cart.

To do:
* Remove RAM
* Install sockets for RAM
* Install new RAM and run dead test/diag
* Replace faulty KERNAL ROM
* Bath time for case

#commodore64 #commodore64forever #retrocomputing #electronics #8bit #8bitmicro #8bitcomputer

Last updated 3 years ago

Tim · @timrb
45 followers · 93 posts · Server aus.social

Today's haul. A and a "breadbin" . I haven't tried to power them on yet. I'm wondering if I should make a video or at least take some photos of the restoration. I've had (terrible) luck with the last few I've acquired working 100% correctly (not counting the RIFA caps in the BBC and IIe machines). Maybe I'll have to get the soldering iron out!

#retrocomputer #commodore16 #commodore64 #retrocomputers #commodore64forever #retrocomputing #electronics #8bit #8bitmicro #8bitcomputer

Last updated 3 years ago

Ignacio Chavez · @nashio
2 followers · 36 posts · Server mstdn.social
Tim · @timrb
43 followers · 82 posts · Server aus.social

Just a quick sketch of a pear using MousePaint on the Apple IIe

#retrocomputing #retrocomputers #8bitcomputer #apple2e #vintagecomputing

Last updated 3 years ago

Noah Burney · @nwah
4 followers · 2 posts · Server hachyderm.io

Latest acquisition is a fun crossover between two of my favorite things: 8-bit computers and Korean language.
The Daewoo IQ1000 (CPC-200) is an MSX1 computer with built-in Hangul support.
This is my first MSX machine. Any game, programming or productivity software recommendations?

#msx #msx1 #vintagecomputing #8bitcomputer #hangul #대우전자

Last updated 3 years ago

Noah Burney · @nwah
0 followers · 1 posts · Server hachyderm.io

Latest acquisition is a fun crossover between two of my favorite things: 8-bit computers and Korean language.
The Daewoo IQ1000 (CPC-200) is an MSX1 computer with built-in Hangul support.
This is my first MSX machine. Any game, programming or productivity software recommendations?

#msx #msx1 #vintagecomputing #8bitcomputer #hangul #대우전자

Last updated 3 years ago

Tim · @timrb
43 followers · 82 posts · Server aus.social

Using a modern PC to transfer files to and from a 38 year old computer over an audio connection. What an age we live in!

#retrocomputing #retrocomputer #apple2e #8bitcomputer

Last updated 3 years ago

Linker3000 · @linker3000
62 followers · 102 posts · Server oldbytes.space

I'm chasing a floppy disk i/f fault round my BBC MIcro to get a Gotek working.

I've found one bad TTL logic chip so far, but fear that the main 8271 controller is bad, so I'm on the lookout for a reliable source for a replacement, or do I just go for a 1770 kit?

#retrocomputingproblems #BBCMicroComputer #8bitcomputer

Last updated 3 years ago

Tim · @timrb
43 followers · 82 posts · Server aus.social

Retro gaming after dark. It feels wrong to play Mario on the Commodore 64.

#retrogaming #commodore64 #8bit #8bitcomputer #supermario

Last updated 3 years ago

Jim Donegan ✅ · @jimdonegan
955 followers · 1921 posts · Server mastodon.scot

@amoroso Nice. I have the 68k MBC kit but have been busy soldering other kits this so far - I save that one for some later time.

Have you heared about the kits?

#8bitcomputer #rc2014

Last updated 3 years ago

This is a little reminder that out there in the wild storms of the internets hides a tiny, little based , operated by an enthusiastic nostalgic (me) waiting for other fans to share, laugh and enjoy a little bit of those good old days, when the emphasis was on "social", not "media" and 1.44 MB were considered a *very large* transfer volume.

So feel free to visit "RC-BOX", the world's first and (currently only) based bulletin board system !!

Dial (Telnet, e.g. with PuTTY or Syncterm): rc2014bbs (dot) ddns (dot) net on TCP Port: 2014

#z80 #bbs #retrocomputing #rc2014 #rc2014bbs #bbsing #8bitcomputer #z80a

Last updated 3 years ago

+++ SYSOP NOTICE +++ SYSOP NOTICE +++

Don't miss the latest SysOp news (06/29/2022) on RC-BOX BBS, the world's first and (currently only) based bulletin board system !!

In this issue we have three anniversaries to celebrate and take an outlook to upcoming projects

Many thanks to those of you who keep calling regularly, you drive my motivation!

#rc2014 #8bit #homebrewcomputing #rc2014bbs #bbsing #8bitcomputer #z80

Last updated 3 years ago

Mx. Savanni D'Gerinel · @savanni
346 followers · 2754 posts · Server anarchism.space

I made a video illustrating a problem I'm having with a 74LS161A module while building Ben Eater's .

If you are electrically inclined, I would appreciate your opinion on the behavior that I'm seeing.

youtu.be/1QCZBf68Cys

#8bitcomputer

Last updated 5 years ago