Getafix
Experienced Member
Hi,
I fairly recently bought a digital group Z80 system (16K). It's in pretty decent shape, but not quite working. When powering up I get the message to Load Z80 INITIALIZE Cassette. No matter what I load, the load never completes - when the audio stops nothing more happens. If I then start another tape, the new program just keeps going into the bank where the first load stopped.
I did what Falter did in a thread by more or less the same name as this one - I "looked at" the RAM chips by putting them on the video board. I found (so far) only 1 faulty chip which I replaced with a chip from the last bank of RAM. Now, I don't get the periods anymore when I load through bank 6 RAM.
I have tried from the cassettes I have, as well as from the digital files I found on the bytecollector site. So far no luck, but I'll keep at it.
From one of the YouTube videos I found that shows a program loading, I see another difference with what I have going on. On my system, the display "loses sync" during some portions of the load. This is repeatable - I will make 100% sure - I believe it always happens during loading into specific banks. Maybe this is an indication of an issue to chase down?
I cannot DM anyone yet - this is my 1st post and only after 10 posts do I earn the trust to DM
Any ideas or help appreciated!
-Stefan
I fairly recently bought a digital group Z80 system (16K). It's in pretty decent shape, but not quite working. When powering up I get the message to Load Z80 INITIALIZE Cassette. No matter what I load, the load never completes - when the audio stops nothing more happens. If I then start another tape, the new program just keeps going into the bank where the first load stopped.
I did what Falter did in a thread by more or less the same name as this one - I "looked at" the RAM chips by putting them on the video board. I found (so far) only 1 faulty chip which I replaced with a chip from the last bank of RAM. Now, I don't get the periods anymore when I load through bank 6 RAM.
I have tried from the cassettes I have, as well as from the digital files I found on the bytecollector site. So far no luck, but I'll keep at it.
From one of the YouTube videos I found that shows a program loading, I see another difference with what I have going on. On my system, the display "loses sync" during some portions of the load. This is repeatable - I will make 100% sure - I believe it always happens during loading into specific banks. Maybe this is an indication of an issue to chase down?
I cannot DM anyone yet - this is my 1st post and only after 10 posts do I earn the trust to DM
Any ideas or help appreciated!
-Stefan