Search found 403 matches

by mz-80a
Fri Dec 03, 2021 1:56 pm
Forum: Other
Topic: [MZ-700] EASIDATA
Replies: 2
Views: 156984

Re: [MZ-700] EASIDATA

Manual.
by mz-80a
Fri Dec 03, 2021 1:54 pm
Forum: Other
Topic: [MZ-700] EASIDATA
Replies: 2
Views: 156984

Re: [MZ-700] EASIDATA

ZIP only contains MZF. Unable to upload a 3MB file here (annoyingly). Will see about posting up images instead then.
by mz-80a
Fri Dec 03, 2021 1:53 pm
Forum: Other
Topic: [MZ-700] EASIDATA
Replies: 2
Views: 156984

[MZ-700] EASIDATA

Just archiving a few more bits of software here. ZIP file contains software and manual.
EASIDATA_Page1.jpg
EASIDATA_Page1.jpg (83.82 KiB) Viewed 156984 times
by mz-80a
Fri Dec 03, 2021 1:50 pm
Forum: Other
Topic: [MZ-700] BASIC EXPANDER
Replies: 0
Views: 3656

[MZ-700] BASIC EXPANDER

Just archiving a few more bits of software here. ZIP file contains software and manual.
BASIC EXPANDER.zip
(1.87 MiB) Downloaded 381 times
by mz-80a
Thu Nov 04, 2021 6:27 pm
Forum: Assembly
Topic: VBLANK
Replies: 6
Views: 4563

Re: VBLANK

Also, it's interesting that the MZ-80K Monitor has this:
vblank_80k.png
by mz-80a
Thu Nov 04, 2021 6:22 pm
Forum: Assembly
Topic: VBLANK
Replies: 6
Views: 4563

Re: VBLANK

Excellent. With that check, you are then in the period of time when the beam is travelling from the bottom of the screen back up to the top. That's also correct? So that small amount of time is the time you have to push new data to VRAM.
by mz-80a
Thu Nov 04, 2021 10:00 am
Forum: Assembly
Topic: VBLANK
Replies: 6
Views: 4563

Re: VBLANK

Thanks! Ok, so the 1st option is enough to create flicker-free sprite graphics (even on MZ-80) ?
by mz-80a
Tue Nov 02, 2021 9:44 am
Forum: Assembly
Topic: VBLANK
Replies: 6
Views: 4563

VBLANK

Hi,

Something that's always confused me. Is it better to do this:

Code: Select all

LOOP: LD A,($0E002)
RLA
JR C,LOOP
Or:

Code: Select all

LOOP1: LD A,($E002)
RLA
JR NC,LOOP
LOOP2: LD A,($E002)
RLA
JR C,LOOP2
Before drawing to the screen (for stable graphics) ?
by mz-80a
Sun Oct 31, 2021 9:05 am
Forum: Assembly
Topic: Determining which MZ
Replies: 4
Views: 3831

Re: Determining which MZ

Thanks! I forgot about that other thread! Looks like you have a decent method worked out. I might write a small program soon to try this out and try it on my various machines. I guess there are roughly three categories : - MZ-80 K series (MZ-80 K/K2E/C) - MZ-80 A series (MZ-1200) - MZ-700 series (MZ...
by mz-80a
Sat Oct 30, 2021 10:31 am
Forum: Assembly
Topic: Determining which MZ
Replies: 4
Views: 3831

Determining which MZ

Hi, Is there a decent 'failsafe' method of finding out which MZ computer your program is running on? Only one I know of is perhaps checking the Monitor text (e.g. "SA-1510" etc). But that's not 100% accurate and if somebody has a modified MROM which doesn't even display this text then the ...