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Re: -Hard-Drives w/vulcan?
brad wrote:
<snip>
anyway...from the vague .jpgs i uploaded...what is on the card ...listed
from top left to right format
DIP SWITCH
(all 1-5 all set to off) chip 1 chip 2
P8424 74F04 PC
DM74LSB6N 8419 Indonesia
chip 3 chip 4 chip 5
chip 6
PAL12H6CN F 842200 842200
718241 74LS175 PC M74ALS00AP M74ALS00AP
8040 Indonesia
Labeled CGL Microsystems @ 1985 Rev. A
Yowch! Try switching to a monospaced font when attempting columns--
those are pretty mangled.
Still, the info is there...and a little disappointing, since there's a
PAL that will make reverse engineering much harder.
Chip 1 is an 'LS86 (not B6). All pretty standard stuff except for the
PAL, but an interesting mix of logic families! The card must be gating
and buffering some signals while trying to delay them as little as
possible.
anyway i'll send of the .jpg's that i have so far and will get the card to
bill g. and he can make some better .jpg's hopefully for public viewing on
his or upload them to some other site that could do so
now ...i also have a Vista 5 carosel floppy drive (5 hd 5.25 floppies in a
cartridge) to make a physical equiv to an 8" disk drive (like 1.2 meg or
some such) anyone nuts enough to want to tackle that (come on people i got
prob 12 more just as wierd around here....lobo 8" controller card for 8"
drives.....b-sider tape backup ...the list goes on)
I have one of the Vista drives, but no controller. I didn't have any
of the specially slotted floppies for it, but I made a couple out of
standard ones just to try out the changer mechanism--Rube Goldgerg, but
it works. ;-)
-michael
Music synthesis for 8-bit Apple II's!
Home page: http://members.aol.com/MJMahon/
"The wastebasket is our most important design
tool--and it is seriously underused."