Search found 36 matches

by ViperSan
Wed Oct 18, 2017 6:24 pm
Forum: Hardware
Topic: Finally got my test harness/dongle built
Replies: 0
Views: 2732

Finally got my test harness/dongle built

Took a few attempts to get the wiring just right ..and gather together the bits I needed.. but I'm pleased with the result .. Here are a few pics of the user port/control port harness ..and a photo of it in action with the keyboard dongle ...and serial port dongle in place .. Plus a recently repaire...
by ViperSan
Sat Oct 07, 2017 11:03 am
Forum: Hardware
Topic: Azimuth alignment tapes ?
Replies: 0
Views: 2498

Azimuth alignment tapes ?

So ..I have several datasette units ..2 of which are fitted with the mini din as used bt c16 and plus 4 I know asimuth alignment tapes exist ..not that I have one atm. My question is ..should I manage to find one of these tapes ...will the program it contains run on all commodore machines. ..is it a...
by ViperSan
Thu Oct 05, 2017 3:27 pm
Forum: BASIC
Topic: Help with a Poke Command.
Replies: 3
Views: 6013

Re: Help with a Poke Command.

Poke and Peek are basically just 'Basic' operations that Write and Read memory locations or in some cases registers.. Poking a value to a memory location ..writes that value to that location.. Peeking that same loction allows you to read back a value . The number before the comma is the location ..t...
by ViperSan
Thu Oct 05, 2017 10:09 am
Forum: Hardware
Topic: My Re-furb collection so far..
Replies: 4
Views: 4578

Re: My Re-furb collection so far..

So ..I managed to get one more C64 pcb repaired ..but.. after checking I had all the parts I needed but 1 for a rebuild. The power plug escutcheon .. what to do ? Well ..I thought..I wonder if I could make one .. After some rummaging in my scrap metal box ..I found some used right angled aluminium s...
by ViperSan
Fri Sep 29, 2017 9:25 am
Forum: Help!
Topic: Diagnostic cart 586220 and tests ?
Replies: 3
Views: 5715

Re: Diagnostic cart 586220 and tests ?

Sadly .. that was my last 6510.. Anyone know where I can get more (reasonably priced?) I have a few of them left. PM or e-mail me. Cheers I appreciate the offer ..but searching on fleabay last night found someone in the far East selling 2 for £14 including postage.. so took a chance and ordered 2 ....
by ViperSan
Thu Sep 28, 2017 9:12 pm
Forum: Help!
Topic: Diagnostic cart 586220 and tests ?
Replies: 3
Views: 5715

Re: Diagnostic cart 586220 and tests ?

Ok ..answered my own question .. Swapped out the PLA .. Just the same .. Then it occurred to me .. perhaps the banks aren't being switched by the cpu.. So .swapped out the 6510 .. et voila.. problem solved .. I guess the cpu is only partially operational.. Sadly .. that was my last 6510.. Anyone kno...
by ViperSan
Thu Sep 28, 2017 8:45 pm
Forum: Help!
Topic: Diagnostic cart 586220 and tests ?
Replies: 3
Views: 5715

Diagnostic cart 586220 and tests ?

I now have a diagnostic cartridge 586220 which seemed like a tool I'd need for my C64 resurrections. But am having an issue straight away ... I popped it in my main C64 ..and let it run .. Zero page OK Stack page OK Screen RAM OK but the test hung at RAM TEST1 ? So ..thinking it might be me ..or the...
by ViperSan
Tue Sep 26, 2017 9:15 pm
Forum: Hardware
Topic: 1541 schematic needed for 1540050 pcb
Replies: 1
Views: 3199

1541 schematic needed for 1540050 pcb

Hi ..perhaps one of you guys can help me here ... There has been fairly extensive repair work already to the data lines on this floppy drive ..and I have fitted IC bases to all the large chips ..and most of the 74 logic devices... I still cant get it to run .. All the large chips cpu, pla, roms via ...
by ViperSan
Tue Sep 26, 2017 11:16 am
Forum: Hardware
Topic: My Re-furb collection so far..
Replies: 4
Views: 4578

Re: My Re-furb collection so far..

I am genuinely jealous of the PET and it's double disk drive. Nice machine! Glad you like the PET ...as do I.. ..and to think ..I almost gave up on it when I first powered it up after 25 years..and it almost caught fire.. Quite frightening ..exploding filter caps on the mains input.. lol Oh ..forgo...
by ViperSan
Sun Sep 24, 2017 3:58 pm
Forum: Hardware
Topic: My Re-furb collection so far..
Replies: 4
Views: 4578

My Re-furb collection so far..

Been at this a couple of months now ..and still have a few to complete ..including another VIC20 ..and a C64 .. ..also an AppleII Europlus. Pictured are the completed items .. ..and with the exception of a couple of VICs ..and the C16 ..they dont have power supplies .. I use this one ... https://en....