Search found 525 matches

by hlide
Sun May 16, 2021 11:48 am
Forum: Hardware
Topic: MZ-80b FI/O to HxC Cable
Replies: 22
Views: 256

Re: MZ-80b FI/O to HxC Cable

@psmart, two possibilities:

- the person didn't read your PM. It only moves in "sent PMs" when the reader accesses the forum or reads it (not sure which)
- the quota in "sent PMs" is full.

That's why I prefer to PM with email when indicated.
by hlide
Sun May 09, 2021 3:28 pm
Forum: BASIC
Topic: MZ-80B software
Replies: 15
Views: 575

Re: MZ-80B software

That header dumping sounds like a WAV format.
by hlide
Sun May 02, 2021 11:18 pm
Forum: Off-topic
Topic: Texts in Japonese
Replies: 1
Views: 84

Re: Texts in Japonese

Vu que le katakana est utilisé pour des mots empruntés à l'étranger, ça va être chaud.
by hlide
Wed Apr 28, 2021 9:32 am
Forum: BASIC
Topic: MZ-80B software
Replies: 15
Views: 575

Re: MZ-80B software

I think the hardware of MZ-80 B is even cleaner than MZ-80 K's: no custom IC, pretty clear schematics. I/O devices are handled through I/O ports. MZ-2500 is certainly the best of all. Its hardware is quite outstanding.
by hlide
Tue Apr 27, 2021 7:57 pm
Forum: BASIC
Topic: MZ-80B software
Replies: 15
Views: 575

Re: MZ-80B software

You don't understand. He probably means as it's not from series K, B softwares are very hard to find out in comparison K softwares.
by hlide
Wed Apr 21, 2021 12:47 am
Forum: Demoscene
Topic: Futuro MZ by Genesis Project
Replies: 14
Views: 2208

Re: Futuro MZ by Genesis Project

The /WAIT facility is for any device which needs to supply it and it is a common Z80 signal: for instance, when you plug you own PCB in the expansion bus (/EXWAIT signal) and want to make the CPU able to adjust to slow chips (/EXWAIT signal is connected to Z80 /WAIT signal). MZ-80 K has no LSI to ha...
by hlide
Sun Apr 18, 2021 10:19 am
Forum: Hardware
Topic: MZ-80A RFS Board / MZ-700 tranzputer Board
Replies: 2
Views: 231

Re: MZ-80A RFS Board / MZ-700 tranzputer Board

I would be interested in MZ-80A upgrade board with a 40/80 columns card. Few years ago, I acquired an ill-working MZ-80A with 40/80 modding but I may restore it in its original hardware as it is not stable.

MZ-2500 in the FPGA emulator will be the summum as I think it is the last of the B series.
by hlide
Fri Apr 16, 2021 6:33 pm
Forum: Demoscene
Topic: Futuro MZ by Genesis Project
Replies: 14
Views: 2208

Re: Futuro MZ by Genesis Project

Also, the snow effects on MZ-80 K is merely due the fact that Z80 is reading/writing in VRAM while video circuit is reading bytes from VRAM precisely because there is no setting /WAIT to 0 when drawing during horizontal rasterline.
by hlide
Fri Apr 16, 2021 6:02 pm
Forum: Demoscene
Topic: Futuro MZ by Genesis Project
Replies: 14
Views: 2208

Re: Futuro MZ by Genesis Project

yes, it looks MZ-80 A has a similar scheme but I didn't see it clearly in the service manual. If true, MZ-80 A may benefit of the same tricks to make fast display.
by hlide
Thu Apr 15, 2021 6:43 pm
Forum: Demoscene
Topic: Futuro MZ by Genesis Project
Replies: 14
Views: 2208

Re: Futuro MZ by Genesis Project

When Z80 tries to access memory or I/O port, there is a moment when you drive a chip to read/write a byte, you need the Z80 to be paused because that chip may need more time to handle the operation. For that purpose, a chip may set the Z80 /WAIT input pin to make the Z80 inserting more cycles (idlin...