Search found 312 matches

by hlide
Tue Oct 01, 2019 7:04 pm
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 633

Re: MZ 700 - detect PAL/NTSC

Detect which monitor ROM? well, not very standard as well...
by hlide
Tue Oct 01, 2019 12:17 pm
Forum: Emulation
Topic: Difference between MZT and MZF files
Replies: 5
Views: 507

Re: Difference between MZT and MZF files

With that definition, mz7c can only process MZF files. And MZ7 files can also be renamed into MZF files too. It cannot work with a MZT file which has several data blocks.
by hlide
Tue Oct 01, 2019 12:02 pm
Forum: Emulation
Topic: Difference between MZT and MZF files
Replies: 5
Views: 507

Re: Difference between MZT and MZF files

I sometimes saw a MZT file having one header and several data blocks. The main issue I see with that is that format is not giving the details about the additional data blocks so it's pretty difficult to interpret/extract them without running the main program which is reading the next data blocks. So...
by hlide
Tue Oct 01, 2019 11:59 am
Forum: Emulation
Topic: Difference between MZT and MZF files
Replies: 5
Views: 507

Re: Difference between MZT and MZF files

Yeah, I don't know the difference between MZT, MZF and M12. The program mz7c is just checking the input is suffixed with .mzf to replace it with .mz7. Because there is no really standard about which suffix to use, I decided to keep .mzf for MZ F[ile/ormat?] instead of MZ Tape or M[Z) 12[00 baud?]. F...
by hlide
Mon Sep 30, 2019 2:58 pm
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

MZ-80K group MZ-80K series MZ-80K: An all-in-one kit with keyboard. 20KiB RAM on main memory. MZ-80C: The basic design is the same as the MZ-80K, but 48KiB RAM is standardly installed as the main memory, and the keyboard has been changed to a full keyboard with the same layout as the typewriter, no...
by hlide
Mon Sep 30, 2019 11:32 am
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

Here is the retrocompatibility chain in my opinion:

Code: Select all

MZ-80K ___ MZ-80C ____ MZ-1200
                   \__ MZ-80A
                    \_ MZ-700 ___ MZ-1500
                               \_ MZ-800 
by hlide
Mon Sep 30, 2019 11:27 am
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

And while I may be attempted to add that missing feature which seems inherited from MZ-80 B (yeah MZ-80 A nd B share the same video circuit at some point), I'm not sure it may be easy to do so with an hardware add-on without butchering the mother-board.
by hlide
Mon Sep 30, 2019 11:25 am
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

Nope, again MZ-700 is not retrocompatible with MZ-80 A but with MZ-80 K. There is no successor to MZ-80 A.
by hlide
Mon Sep 30, 2019 11:15 am
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

It is just for MZ-80 A which has the hardware scrolling so the swapping is just a matter of setting the page address every line at most. Scrolling hardware is done by accessing the address between $E200-$E2FF (one byte is 8-character unit, so the next line is 40/8 further, that is $E200+5*N where N ...
by hlide
Fri Sep 27, 2019 10:53 am
Forum: Other
Topic: MZ-80A / MZ-80K extra RAM
Replies: 22
Views: 1327

Re: MZ-80A / MZ-80K extra RAM

By the way, if you want to get a BLNK interrupt, I see it fed to 8253.CKL1 and 8253.OUT1 is feeding 8253.CLK2. 8253.OUT is driving /INT1

So it should be possible to have the interrupt to monitor the lines per pixel, per character or per frame.