Search found 118 matches

by MCes
Thu Nov 23, 2017 3:24 am
Forum: Hardware and Tech
Topic: HASL for cartridges? (split/OT from: Cheese & Onion)
Replies: 51
Views: 265

Re: HASL for cartridges? (split/OT from: Cheese & Onion)

Hasl, gold, hard gold. Nothing of this are perfect... For example in military/professional board (but also on the board inside your PC) the fingers of edge connections are not Hasl, because is needed to prevent false contact for oxidation, but this kind of connector are "not-movible": you ...
by MCes
Sun Nov 19, 2017 1:38 pm
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 445

Re: My first try at EPROMs

9LS10 is equivalent at 74LS10,
(AMD)9016D are Dinamic RAM 16Kx1bit (D= 250nS): http://www.minuszerodegrees.net/memory/4116.htm
by MCes
Sun Nov 19, 2017 5:00 am
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 445

Re: My first try at EPROMs

This different eproms have some differences in pinout, and if PCB was done for a 64k 24pin (as commodore made.. 2364 pinout) you have to adapt your eprom rewiring some pins or using an adaptor or.... you have to use another eprom "pin-compatible" as old Motorola (ask to Eslaption) or the 2...
by MCes
Sat Nov 18, 2017 7:25 am
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 445

Re: My first try at EPROMs

R6551 is ACIA (serial interface) used into Commodore PLUS4,
PAL16L8 is a PLD (Programmable Logic Devices), it seems programmed and can't be erased...
HN462716G is a 2k byte EPROM like as a normal 2716,
2732 is a 4k bytes eprom,
2764 is a 8k bytes eprom....
by MCes
Wed Oct 04, 2017 12:56 am
Forum: Buy, Sell, and Trade
Topic: WonderVIC
Replies: 12
Views: 942

Re: WonderVIC

SOLD! This HW mod is a lot of job and now I won't make soon another "wondervic". Have you ever thought of building/selling a WonderVIC PCB that people could install in their own VIC? COREi64 May be that I will make a PCB for a better ingegnerization, but "wondervic" had a too sm...
by MCes
Mon Oct 02, 2017 4:43 am
Forum: Buy, Sell, and Trade
Topic: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!
Replies: 18
Views: 701

Re: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!

My birthday is in october,
so for this month this expansion have a special price: 29€ (it was 33€)
by MCes
Sat Sep 02, 2017 11:06 am
Forum: Buy, Sell, and Trade
Topic: WonderVIC
Replies: 12
Views: 942

Re: WonderVIC

price drop!
by MCes
Wed Aug 09, 2017 12:23 pm
Forum: Buy, Sell, and Trade
Topic: WTB: VIC-20 Chips (NTSC)
Replies: 6
Views: 148

Re: WTB: VIC-20 Chips (NTSC)

I have an original ntsc kernal, where are you?
by MCes
Tue Jul 25, 2017 1:22 am
Forum: Hardware and Tech
Topic: List of banking memory expansions (more than 35K RAM)
Replies: 5
Views: 266

Re: List of banking memory expansions (more than 35K RAM)

I developed a +123k REU that can be used as standard multi configurable RAM expansion and as 12x 8k paging on BLK5 for a total of 123k ram available. Only prototype was produced, but if more than 4 people will be interested in getting it then I can draw the PCB and make the REU http://sleepingelepha...
by MCes
Sun Jul 16, 2017 2:54 am
Forum: Buy, Sell, and Trade
Topic: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!
Replies: 18
Views: 701

Re: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!

A question: SJLoad work only on PAL VIC20 or on NTSC too? About comparing Tokra $98C40-assembled SJLoad version and my $9800 (SYS40000) assembled version: Tokra's one is a smaller file (less than 1k) and use only I/O3 area (I/O2 free), but it's limited (no SJ-save, no declaring start-stop address.....
by MCes
Sat Jul 15, 2017 2:59 am
Forum: Buy, Sell, and Trade
Topic: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!
Replies: 18
Views: 701

Re: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!

This really is a great little card. :D Thanks MCes. Thanks Vicist, I'm happy for your enthusiasm in discovering the potentiality of your "new" VIC20 system... If I remember well the RAM into i/o areas is (now) out of VICE possibilityes.... the real world win! Try the attached file, it sho...
by MCes
Sat Jul 15, 2017 12:06 am
Forum: Buy, Sell, and Trade
Topic: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!
Replies: 18
Views: 701

Re: FOR SALE: VIC20 FULL-RAM expansion cartridge +37K RAM with RESET!

This really is a great little card. :D Thanks MCes. Thanks Vicist, I'm happy for your enthusiasm in discovering the potentiality of your "new" VIC20 system... If I remember well the RAM into i/o areas is (now) out of VICE possibilityes.... the real world win! Try the attached file, it sho...

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