Search found 681 matches
- Sat Jun 23, 2018 7:33 pm
- Forum: Hardware
- Topic: Can my MZ80K set fire?
- Replies: 2
- Views: 22738
Re: Can my MZ80K set fire?
My first MZ-80 K did make a bang then smoke. But it didn't take fire. The MZ-700 I bought under one year ago has the "famous" X2 capacity exploded (it was already this way before I bought it). Whenever I powered it, I found it smelled too much so I decided to have a look at it. And I made ...
- Mon Jun 18, 2018 3:06 pm
- Forum: Hardware
- Topic: [MZ-SD2CMT] GitHub link
- Replies: 55
- Views: 63179
Re: [MZ-SD2CMT] GitHub link
FR: Ok, j'ai profité de ce weekend - non sans quelques difficultés - pour avancer sur mon projet. J'ai commençé à apporter une modification pour être en mesure de lire un MZF et de le transcrire en SHARP PWM. C'est un travail en cours. Je voulais garder la même façon de procéder que pour lire le fic...
- Tue Jun 12, 2018 9:17 am
- Forum: Hardware
- Topic: MZ-80B Power Supply Repair
- Replies: 14
- Views: 15284
Re: MZ-80B Power Supply Repair
I would love to have both MZ-80A and B but I guess the prices won't be cheap. And damn I start lacking places to put my retro-computers :/.
- Tue Jun 12, 2018 9:14 am
- Forum: Hardware
- Topic: MZ-80B Power Supply Repair
- Replies: 14
- Views: 15284
Re: MZ-80B Power Supply Repair
I am beginning to wonder if it might be the monitor ROM (EPROM?) at fault. It looks like VRAM is fine as the display is perfect. I just cannot understand what else might stop the monitor program completing its loading as I assume the memory test is in ROM? ROM needs a small RAM space (0x1000-0x11FF...
- Tue Jun 12, 2018 9:08 am
- Forum: Hardware
- Topic: MZ-80B Power Supply Repair
- Replies: 14
- Views: 15284
Re: MZ-80B Power Supply Repair
For the program to be loaded, I suppose you got it recorded on a tape. If not and you have an MZ-700 with a working tape recorder, there is a way: enter the bytes with M command and save them with S command in a tape. Then you should be able to play it on MZ-80 K. There is a small complication: if y...
- Tue Jun 12, 2018 8:47 am
- Forum: Hardware
- Topic: MZ-80B Power Supply Repair
- Replies: 14
- Views: 15284
Re: MZ-80B Power Supply Repair
I made a program RAMTEST to determine which row and which chip has an issue: the program is loaded into VRAM (so you'll see some weird characters at first lines) and will check some patterns (D0 chip: 01 - D1 chip: 02 - D2 chip: 04 - D3 chip: 08 - D4 chip: 10 - D5 chip: 20 - D6 chip: 40 - D7 chip: 8...
- Mon Jun 11, 2018 5:03 pm
- Forum: Hardware
- Topic: MZ-80B Power Supply Repair
- Replies: 14
- Views: 15284
Re: MZ-80B Power Supply Repair
Yes, the speed is 1800 bauds for MZ-80B and 1200 bauds elsewhere. There are small differences in timings in the encoding too (shorter GAP). You can find this information here.
- Sat Jun 09, 2018 10:34 am
- Forum: Hardware
- Topic: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise cassette
- Replies: 25
- Views: 27217
Re: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise casse
Of course, I'll be glad to see your pictures.
- Fri Jun 08, 2018 10:10 pm
- Forum: Hardware
- Topic: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise cassette
- Replies: 25
- Views: 27217
Re: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise casse
FR: Eh eh eh. Non, il me reste encore en réserve quelques idées à tester. Mais avec ton code, je vais pouvoir les tester rapidement. Mon soucis actuel, c'est que depuis que je me suis mis à la collection des MZ et à faire joujou avec l'Arduino (à cause d'un lecteur de cassette non fonctionnel), je n...
- Fri Jun 08, 2018 3:24 pm
- Forum: Hardware
- Topic: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise cassette
- Replies: 25
- Views: 27217
Re: MZ2TAPE: Fast transfer 100ko / min through the tape socket / MZ2TAPE : Transfert rapide 100ko/min par la prise casse
Bon je vois que tu as fait à peu près tout ce que je voulais faire (inclure le code dans le commentaire du header, etc.) - à un détail près - n'avoir que 2 signaux au lieu de 3.