Search found 408 matches

by MCes
Sun Aug 23, 2020 2:43 am
Forum: International VIC
Topic: Dove riparare un VIC in Italia
Replies: 89
Views: 14780

Re: Dove riparare un VIC in Italia

Mi permetto di sconsigliare assolutamente gli spray pulisci contatti su una scheda elettronica, gli spray, la cui utilità è discutibile in toto, sono pensati per lubrificare e sciogliere residui /sporcizie dalle superfici di contatti struscianti e lasciano spesso essi stessi residui unti che diventa...
by MCes
Sat Aug 22, 2020 10:29 am
Forum: International VIC
Topic: Dove riparare un VIC in Italia
Replies: 89
Views: 14780

Re: Dove riparare un VIC in Italia

NON ACCENDERLO
hai tolto il dissipatore di calore al ponte di diodi dell'alimentatore, se lo accendi in queste condizioni a breve si squaglia ed è brutta cosa.... :wink:

Le saldature della RAM non sono bellissime, ma se ha funzionato per anni.....

Facci sapere
by MCes
Sat Aug 22, 2020 7:19 am
Forum: International VIC
Topic: Dove riparare un VIC in Italia
Replies: 89
Views: 14780

Re: Dove riparare un VIC in Italia

Forse anche una pulizia con una gomma da cancellare (non troppo dura, una da disegno va bene) potrebbe aiutare. Io immaginavo il problema sui contatti del connettore del vic20 (se è molto che non veniva usato con le cartucce), ma anche la tua osservazione è buona: se il problema fosse all'opposto s...
by MCes
Sat Aug 22, 2020 7:13 am
Forum: International VIC
Topic: Dove riparare un VIC in Italia
Replies: 89
Views: 14780

Re: Dove riparare un VIC in Italia

Se ho capito bene quindi il vic parte bene se non ha cartucce, altrimenti fa difetto, è così? In questo caso la cosa più facile è che ci sia dell'ossido su uno o più contatti del connettore cartuccia, quindi a vic spento inserisci e sfila una decina di volte una cartuccia, soffia via eventuali resid...
by MCes
Tue Aug 18, 2020 1:54 pm
Forum: International VIC
Topic: Dove riparare un VIC in Italia
Replies: 89
Views: 14780

Re: Dove riparare un VIC in Italia

Ciao Niel, nonostante io abbia deciso di non cercarmi attività di riparazioni, che mi portano via molto tempo, per casi particolari (affettivi) puoi considerarmi come risorsa disponibile... Quindi se non trovi qualcuno in zona tua io (provincia di Roma) posso tentare la riparazione del tuo amato VIC...
by MCes
Sat Aug 01, 2020 9:49 am
Forum: Buy, Sell, and Trade
Topic: SMART RAM: a versatile RAM expansion cartridge up to +37k
Replies: 15
Views: 4774

SMART RAM: a versatile RAM expansion cartridge up to +37k

. SMART RAM: it's arrived! P_20200825_132135tot.jpg 1) It's a "whole RAM": all areas that a VIC can select from a cartridge are covered by this RAM expansion 2) It's easy: a simple 3-position selector lets you choose the configuration as follows: --- side A) +24k Basic (+8k BLK5, +3k low ...
by MCes
Tue Jul 28, 2020 12:18 pm
Forum: Hardware and Tech
Topic: ROM replacement options (split/OT from: WIP: MINIMON)
Replies: 5
Views: 395

Re: ROM replacement options (split/OT from: WIP: MINIMON)

If the result is what matters, a simple 28-pin to 24-pin adapter suffices. On older VIC-20s, that makes problems though as there's not enough room between keyboard PCB and the chips to close the case. I have 27HC641 and I can flash them for who need it http://sleepingelephant.com/ipw-web/bulletin/b...
by MCes
Fri Jul 24, 2020 2:15 am
Forum: Hardware and Tech
Topic: Banked RAM cart
Replies: 44
Views: 2841

Re: Banked RAM cart

@Mike
Thanks for "unroll" explanations.
Yes, I was thinking on something different: out of target!
by MCes
Fri Jul 24, 2020 2:03 am
Forum: Hardware and Tech
Topic: Banked RAM cart
Replies: 44
Views: 2841

Re: Banked RAM cart

@ Mike
If SD card support is discardable (to compensate it a backupped battery RAM could be employed) a flexible and cheap solution could be developed.

Please: my google translator don't find "Unrolled code generator", could someone explain? thanks
by MCes
Sun Jul 12, 2020 1:43 pm
Forum: Hardware and Tech
Topic: Banked RAM cart
Replies: 44
Views: 2841

Re: Banked RAM cart

This project can be done cheap: it contain a TTL chip, a PLD (22V10) and a 128K static ram.
This system can be extended for having more Ram than 128K (more 8k pages)

http://sleepingelephant.com/ipw-web/bul ... f=3&t=7706
by MCes
Fri Jul 10, 2020 7:57 am
Forum: Other Systems
Topic: Exactly how NOT to make a multicart for the C64
Replies: 113
Views: 7874

Re: Exactly how NOT to make a multicart for the C64

I learned from you that C16 PLUS4 cpu/TED sockets have very poor quality, and I found interesting some threads of yours about testing on C64 boards of different ages. pending questions: --The list of who had it's VIC 20 C64 connector damaged by the HASL cartridge finishing (or equivalent evidences)....
by MCes
Thu Jul 09, 2020 12:09 am
Forum: Other Systems
Topic: Exactly how NOT to make a multicart for the C64
Replies: 113
Views: 7874

Re: Exactly how NOT to make a multicart for the C64

Do not run away! pending questions: --The list of who had it's VIC 20 C64 connector damaged by the HASL cartridge finishing (or equivalent evidences). --The pics of the gerber view of SARUMAN-TED V1.2 This is not the time to bluff: show specific evidence or shut up, this thread is so long and noisy ...
by MCes
Wed Jul 08, 2020 11:54 pm
Forum: Other Systems
Topic: Exactly how NOT to make a multicart for the C64
Replies: 113
Views: 7874

Re: Exactly how NOT to make a multicart for the C64

Although Eslapion's post (Wed Jul 01, 2020 4:57 pm) is full of lies and half-truths, Prove it... I ask to others: I have to stop or to prove it? For the answer (in words and deeds) I will wait one day, then I will act accordingly. Other waiting answers: --The list of who had it's VIC 20 C64 connect...
by MCes
Wed Jul 08, 2020 3:00 pm
Forum: Other Systems
Topic: Exactly how NOT to make a multicart for the C64
Replies: 113
Views: 7874

Re: Exactly how NOT to make a multicart for the C64

Although Eslapion's post (Wed Jul 01, 2020 4:57 pm) is full of lies and half-truths, rather than answering him, I preferred to have a few laughs with those who tried to dampen this thread. I think my effort is clearly visible. After a week ( Wed Jul 08, 2020 12:44 am ) Mr. Eslapion tries again to hi...