I'll buy one if it'll work in my USA VIC-20. --- Marko_Mäkelä <msmakela@cc.hut.fi> wrote: > [Re: previuos posting on B&W C64: Nick, I said > "Nicolas", not "Nicholas". :-) > But you made a good point anyway; I didn't consider > the possibility of a > 3rd party modification.] > > I've now almost designed the printed circuit board > for the VIC-20 memory > cartridge. It'll have 4 chips on the top side: > Am29LV160D (2MB Flash > ROM), HM62256B (32kB SRAM), 74LVX245 (data bus > buffer), and Lattice 2032 > programmable logic chip. On the bottom side there > are only two 74LVX245 > chips that buffer the address lines. > > The 3.3 volt regulator and the programming interface > for the Lattice 2032 > are missing, but I hope my friend will be able to > fill these gaps soon. > There are 31 holes on the board now. > > My question is: how many people would be interested > in this cartridge, and > how many have the skills and equipment to (a) > manufacture, and (b) > assemble the printed circuit board? This will be a > freeware product, but > since I think that SMD chips and boards are > difficult to handle without > expensive equipment, it would be good to have the > boards professionally > produced somewhere. If someone knows a cheap place > for doing this (I > think etching, drilling and coating with the "green > paint" that resists > solder would be enough), I would like to know. My > friend has access to > some equipment, but it is not suitable for producing > more than, say, 5 > prototype boards. > > Marko > > - > This message was sent through the cbm-hackers > mailing list. > To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi. ===== Get a FREE 6Mb webmail box from go6502! - http://www.geocities.com/profdredd As low as 2.99% Intro APR from NextCard! - http://www.nextcard.com/index6.html?ref=aff0074521 PayPal is the FAST FREE and SECURE way to send money! - https://secure.paypal.x.com/refer/pal=profdredd%40yahoo.com __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/?.refer=text - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
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