*SOLD OUT* 32k RAM expansions for the VIC-20 - 25$ each

eslapion · Post by **eslapion** » Thu Feb 07, 2013 3:41 pm

Only 6 left!

unchained1984 · Post by **unchained1984** » Sat Feb 16, 2013 6:24 am

Just wanted to say a big thank you to Francois for shipping one of his 32k expansion carts over to Scotland, works very well indeed. Also a true gentleman.

eslapion · Post by **eslapion** » Sun Feb 17, 2013 7:12 pm

unchained1984 wrote:Just wanted to say a big thank you to Francois for shipping one of his 32k expansion carts over to Scotland, works very well indeed. Also a true gentleman.

Thank you very much for the positive comment!

I'm glad you enjoy!

If I may suggest, try the expander with a few of Ghislain's wonderful 32k games.

unchained1984 · Post by **unchained1984** » Tue Feb 19, 2013 1:22 pm

The suggestion is very much appreciated Francois, I'll do just that.

kind regards,
Sandy

Sid1968 · Post by **Sid1968** » Tue Feb 19, 2013 4:56 pm

I want to have one. Please tell me how to pay it.

Regards
Sid

eslapion · Post by **eslapion** » Wed Feb 20, 2013 5:05 am

Sid1968 wrote:I want to have one. Please tell me how to pay it.

Regards
Sid

PM sent!

eslapion · Post by **eslapion** » Wed Feb 20, 2013 6:38 am

Only 5 left!

eslapion · Post by **eslapion** » Thu Feb 21, 2013 1:47 pm

Only 4 left!

eslapion · Post by **eslapion** » Tue Feb 26, 2013 5:35 pm

Only 3 left!

akator · Post by **akator** » Wed Mar 06, 2013 4:48 am

eslapion wrote:Only 3 left!

PM sent

eslapion · Post by **eslapion** » Wed Mar 06, 2013 2:09 pm

akator wrote:PM sent

Last one left!

eslapion · Post by **eslapion** » Fri Mar 08, 2013 12:18 pm

SOLD OUT!

Thank you all!

sjgray · Post by **sjgray** » Mon Mar 25, 2013 12:13 pm

eslapion wrote:The 32k expansion also has a ROM socket to add extra ROM options such as VICMON, Programmer's Aid and Super Expander.

I got my expander and it's working great. I'm interested in perhaps adding BASIC4. I admit I'm a little rusty in VIC-20 technical details. Just to clarify does the expansion board accept EPROMS or regular ROMS? What are the extra jumper/switches for? Are they documented anywhere? Will there be any problems installing a socket for the ROM/EPROM?

Thanks!
Steve

eslapion · Post by **eslapion** » Mon Mar 25, 2013 8:39 pm

sjgray wrote:I got my expander and it's working great. I'm interested in perhaps adding BASIC4. I admit I'm a little rusty in VIC-20 technical details. Just to clarify does the expansion board accept EPROMS or regular ROMS?

The pinout for ROMs or EPROMS is generally the same so your question only makes sense if you specify which type of chip you intend to use specifically.

The Ultimate Expander was designed to be compatible with (EP)ROMs of a capacity of 16k x 8 or 32k x 8 with parallel access. These include 27128, 27256, 23128, 23256, 27C128, 27C256 and 27128B.

What are the extra jumper/switches for?

The 2 DPDT switches control wether BLK 3 and BLK 5 give you access to the RAM expansion or to the (EP)ROM content.

The last switch to the right is for 32k x 8 (EP)ROMs only and toggles between the lower and upper half of the chip being presented to the VIC. A pair of 1N6263 diodes will also be necessary if you intend to use a 32k x 8 (EP)ROM.

Are they documented anywhere? Will there be any problems installing a socket for the ROM/EPROM?

If you know how the VIC memory map works, no documentation should be necessary.

The board was specifically designed to accept a 28 pin DIP 0.6" wide socket. A socket is recommended if you eventually want to change the content of your (EP)ROM without the need to desolder.

sjgray · Post by **sjgray** » Mon Mar 25, 2013 9:15 pm

eslapion wrote:
sjgray wrote:I got my expander and it's working great. I'm interested in perhaps adding BASIC4. I admit I'm a little rusty in VIC-20 technical details. Just to clarify does the expansion board accept EPROMS or regular ROMS?
The pinout for ROMs or EPROMS is generally the same so your question only makes sense if you specify which type of chip you intend to use specifically.

Well, most VIC and C64 cartridges use masked 8K roms which are definitely NOT pin compatible with most 8K EPROMS.

eslapion wrote: The Ultimate Expander was designed to be compatible with (EP)ROMs of a capacity of 16k x 8 or 32k x 8 with parallel access. These include 27128, 27256, 23128, 23256, 27C128, 27C256 and 27128B.

So these are fairly large compared to normal carts. I was assuming perhaps one 8K ROM or EPROM would fit there.

eslapion wrote:
What are the extra jumper/switches for?
The 2 DPDT switches control wether BLK 3 and BLK 5 give you access to the RAM expansion or to the (EP)ROM content.

The last switch to the right is for 32k x 8 (EP)ROMs only and toggles between the lower and upper half of the chip being presented to the VIC. A pair of 1N6263 diodes will also be necessary if you intend to use a 32k x 8 (EP)ROM.

Are they documented anywhere? Will there be any problems installing a socket for the ROM/EPROM?
If you know how the VIC memory map works, no documentation should be necessary.

Like I said.. I don't really.

eslapion wrote: The board was specifically designed to accept a 28 pin DIP 0.6" wide socket. A socket is recommended if you eventually want to change the content of your (EP)ROM without the need to desolder.

Sure, a socket is nice. I was thinking more of clearance... The board is really tight to the case.

Thanks for the info.

Steve

Denial

SOLD OUT 32k RAM expansions for the VIC-20 - 25$ each

Thanks FRancois

Re: Thanks FRancois