Search found 584 matches

by hlide
Mon Sep 27, 2021 10:41 pm
Forum: BASIC
Topic: SA-5510 Disassembly
Replies: 7
Views: 49

Re: SA-5510 Disassembly

Quite easy to understand as it replaces the first letter of some BASIC commands with the white smiley to "disable" them:
- LIST
- SAVE
- POKE
- PEEK
- USR
by hlide
Mon Sep 27, 2021 10:35 pm
Forum: BASIC
Topic: SA-5510 Disassembly
Replies: 7
Views: 49

Re: SA-5510 Disassembly

So I removed the SD part to keep original code to issue a listing:
SA-5510.zip
(56.06 KiB) Downloaded 1 time
by hlide
Mon Sep 27, 2021 10:16 pm
Forum: BASIC
Topic: SA-5510 Disassembly
Replies: 7
Views: 49

Re: SA-5510 Disassembly

mz-80a wrote: Sat Sep 25, 2021 10:08 pm OK, thanks. Although that doesn't show the memory addresses for the instructions. Pretty good though.
Well, one possibility is to assemble it while asking for a listing (addresses and bytes will be added). But I don't know the assembler the author uses.
by hlide
Mon Sep 27, 2021 10:14 pm
Forum: BASIC
Topic: SA-5510 Disassembly
Replies: 7
Views: 49

Re: SA-5510 Disassembly

This software is a bootloader which loads BASIC interpreter then the BASIC program?
by hlide
Mon Sep 27, 2021 2:15 pm
Forum: Hardware
Topic: MZ-80K displaying garbage chars on screen
Replies: 8
Views: 68

Re: MZ-80K displaying garbage chars on screen

A scope and a logic analyzer are ALWAYS helpful. A scope will help to see if a signal has a good shape (video line or clock). LA will allow you to watch the timings of several logic signals and their coherency.
by hlide
Mon Sep 27, 2021 2:05 pm
Forum: Hardware
Topic: MZ-80K displaying garbage chars on screen
Replies: 8
Views: 68

Re: MZ-80K displaying garbage chars on screen

And a cheap LA1016 too.
by hlide
Wed Sep 22, 2021 11:00 pm
Forum: Hardware
Topic: MZ-80K displaying garbage chars on screen
Replies: 8
Views: 68

Re: MZ-80K displaying garbage chars on screen

No, no difference. You could put a CMOS Z80, it also works.

What is the frequency of the pulses on pin 6?
by hlide
Sun Aug 29, 2021 12:59 pm
Forum: Hardware
Topic: replacement parts for MZ-80K help needed
Replies: 16
Views: 274

Re: replacement parts for MZ-80K help needed

I second dat-alex. And exposing your issues with some pictures is better to get better answers ;).
by hlide
Sat Aug 28, 2021 11:42 pm
Forum: Hardware
Topic: replacement parts for MZ-80K help needed
Replies: 16
Views: 274

Re: replacement parts for MZ-80K help needed

If not through usual sites or ebay, they should be findable at UTsource.