ZX80 troubleshooting with oscilloscope.

Discussions about Sinclair ZX80 and ZX81 Hardware
User avatar
1024MAK
Posts: 5118
Joined: Mon Sep 26, 2011 10:56 am
Location: Looking forward to summer in Somerset, UK...

Re: ZX80 troubleshooting with oscilloscope.

Post by 1024MAK »

Erm wrote: Thu Apr 30, 2020 7:22 pm SAVE "p" (NL)
Is invalid on a ZX80 with the 4K BASIC ROM (the original ROM).

The ZX80 SAVE command does not take a filename, because it has no concept of filenames...

Or are you using a ZX81 8K ROM?

Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp

:!: Standby alert :!:
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb :!:
Looking forward to summer later in the year.
User avatar
Erm
Posts: 225
Joined: Thu Jun 20, 2019 7:07 pm
Contact:

Re: ZX80 troubleshooting with oscilloscope.

Post by Erm »

1024MAK wrote: Thu May 07, 2020 12:39 pm
Or are you using a ZX81 8K ROM?

Mark
Hello Mark. Aha, I didn't know that (never actually saved anything ZX80 style). I'll try that again then.
I'm Chris, a Brit in Germany (Chr$ on the QL forum). https:\\QXL.WIN < QL related collection.
Post Reply