rchampe@hubcap.UUCP (Richard Champeaux) (04/05/88)
I'm building a 68000 based computer, and the 8520 that the amiga uses looked like just the chip I needed. However, I can't find one anywhere. I can't even figure out who makes it. Since its part number starts with an '8' I figured it was an Intel chip, but I can't find it in any of their data books. Does anyone know who makes it, and where I get a few? (like two or three. Minimum orders don't bother me because I need to order some other things as well, however I don't want to have to order 10 of them just to get 2.) Also, does anyone know where I can order 64 pin wire wrap sockets? (If not the sockets, then perhaps individual pins that I can stick through a vector board to make my own socket). The only catalogs I've looked in so far are Jameco and Digi-Key. Thanks Rich Champeaux Clemson University
grr@cbmvax.UUCP (George Robbins) (04/05/88)
In article <1300@hubcap.UUCP> rchampe@hubcap.UUCP (Richard Champeaux) writes: > > I'm building a 68000 based computer, and the 8520 that the amiga uses > looked like just the chip I needed. However, I can't find one anywhere. > I can't even figure out who makes it. Since its part number starts with > an '8' I figured it was an Intel chip, but I can't find it in any of their > data books. The 8520 is a custom Commodore part for the Amiga famaily made by the MOS Technology branch of Commodore. You can order one as a replacement part through a Commodore dealer that offers Amiga service. However you might want to consider using a 6526 instead. This is the the part that served as the basis for the 8520, is used in every C64 and is readily available from Jameco and firms offering "C64 parts". The biggest difference it that it has a "decimal" time of day counter rather than binary. -- George Robbins - now working for, uucp: {uunet|ihnp4|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@uunet.uu.net Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
lai@vedge.UUCP (David Lai) (04/20/88)
In article <1300@hubcap.UUCP> rchampe@hubcap.UUCP (Richard Champeaux) writes: > > I'm building a 68000 based computer, and the 8520 that the amiga uses >looked like just the chip I needed. However, I can't find one anywhere. The 8520 can be bought as spare parts at any commodore dealer. It is made by MOS technologies? (owned by Commodore?). It is basically the same as (forgot number, but its the multifunction/parallel IO chip) in the commodore 64 and 128. There is plenty of published info in various books on the 64 and 128. I can't recall the differences between the two, but they were unimportant. -- "What is a DJ if he can't scratch?" - Uncle Jamms Army The views expressed are those of the author, and not of Visual Edge, nor Usenet. David Lai (vedge!lai@larry.mcrcim.mcgill.edu || ...watmath!onfcanim!vedge!lai)