Denial

My research tells me I need an SD2IEC unit ...but there are a few variants ..
So which one ?
Is there possibly one that does ALL Commodore computers ?
or is it only anything VIC20 or later ..and do they all support a second physical floppy drive ?
rgds
VS

So ..I'm imagining the setup being ..for example a VIC20 with a 1540 attached .. the second serial port on the 1540 attached to an SD hardware drive type device .. thus the 1540 is device 8 ...the SD floppy is device 9 ...and hopefully I'm now able to copy the entire contents of device 8 to device 9...

So ..I have finally found my old floppy collection (100 disks plus) .. I have my PET working again .. A working C64 .. A Working +4 A working VIC20 And I have no idea whats on most of the disks. I also have a working 1540 .. A working 1541 ..and a recently resurrected 8050 for the PET Ok .. thats th...

Really enjoyed this renovation project ... repairs needed to both the 4032 and the 8050 ... and restored a datasette exclusively for the PETS use.. Thanks for all the help I received guys ...and a big thanks to Dave at Tynemouth for letting me bend his ear .. Apart from the annoying crt green screen...

mrr19121970 wrote:Download the PRG from zimmers. This works fine (doesn't crash after audio mod screen).

http://www.zimmers.net/anonftp/pub/cbm/ ... vaders.prg

..that is a PRG file which I will presumably need to convert to TAP ...
Could you outline how to do this please ?
rgds
VS

There is a version here http://www.classic-computers.org.nz/blog/2011-02-27-pet-programs-for-download.htm that loads, but crashes after the 1st screen. Using FinalTap you can extract the PRG. You need to correct the header in a HEX editor from 01 08 to 01 04 to get it to run (still crashes in VICE)...

So ...I finally repaired my PET4032 ...and my 8050 dual floppy ... Now I want to get space invaders on it .. I have downloaded a TAP file of space invaders for the PET ...dumped this to audio cassette with Audiotap .... popped the cassette in a datasette attached to the PET ...and set it to load .. ...

Very few of the keys were working ...
took about 2 hours to strip it down and clean everything ..and wipe over the keyboard contacts with iso alcohol..
But the KB is like new now..
Another job done.

IT'S ALIVE!!!! A good bit of tech help from Dave Curran ..and His Highly recommended diagnostic chip .. Non of the RAM banks were working .. diagnostics shown all chips with errors .. So what were the chances ? ...I figured it was more likely that one of the supply rails to memory was down .. ..and ...

So ..looks like I'm after bin dumps of the 2 x 27C256 Eproms Hi rom and Lo rom..
Has no one got these dumps ?
All I seem to be able to find is info on the 27C512 Version..
rgds
VS

So whilst waiting to get my PET repaired I thought I'd sort through some other Commodore bits n pieces ..and came accross these 2 naked cartridge pcbs .. I guess I'd like to populate them again ..but aside from the logic chips I need the code Roms or Eproms .. The one on the left is obviously a Fina...

Been in touch with Dave Curran at Tynemouth software ... I have on order a combined Rom/Ram chip that plugs into the cpu socket .. and also a diagnostics chip ... both are his own design ..and should enable me to either diagnose and fix the PET or just ..substitute thereby fixing.. I'll let you know...

Thanks Norm .. There are 16 x 4116 chips on my mobo ..half of which are socketed ..so these 8 will be easily swapped ...and I might well socket the other 8 ... If I still dont get a result then I will check out those links.. There are also 2 x 2114 chips.. Display/screen memory perhaps ? What would ...

Clutching at straws I just chip swapped the 6502 and the 6522 ..
No change..but at least these are now eliminated.
cest la vie

@ViperSan I strongly suspect every time you start up your PET to check it, you cause even more damage or run the chance thereof. I know of only 2 people who can fix PET computers. These are Ray Carlsen and Jean-Claude Lachapelle. Well ...looking at the board it is indeed a very chip populated board...