7 Dec
2006
7 Dec
'06
5:43 p.m.
to make one of these in discrete logic:
(if you don't feel like looking, it's an Apple II
IDE/Cflash controller)
http://cgi.ebay.com/MicroDrive-IDE-Controller-for-Apple-IIe-IIgs_W0QQitemZ3…
Just a rough chip count.
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7 Dec
7 Dec
5:45 p.m.
Chris M wrote:
to make one of these in discrete logic:
(if you don't feel like looking, it's an Apple II
IDE/Cflash controller)
http://cgi.ebay.com/MicroDrive-IDE-Controller-for-Apple-IIe-IIgs_W0QQitemZ3…
Just a rough chip count.
Assuming normal discrete logic? About three.
Gordon.
5:51 p.m.
On Thu, 7 Dec 2006, Chris M wrote:
to make one of these in discrete logic:
(if you don't feel like looking, it's an Apple II
IDE/Cflash controller)
http://cgi.ebay.com/MicroDrive-IDE-Controller-for-Apple-IIe-IIgs
_W0QQitemZ300055639046QQihZ020QQcategoryZ80286QQrdZ1QQcmdZViewItem
Just a rough chip count.
It looks like there are a couple PLAs, some discrete logic, a
microcontroller of some sort, and an EPROM. Frankly, I don't think doing
discrete logic for something like this is worth the trouble. The card
itself seems sufficiently low-tech already.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
6:02 p.m.
it doesn't have to be entirely of 7400s or the like,
just a design where no *exotic* programming is
required. I just wanted an idea. A microcontroller,
and whatever else is fine.
--- David Griffith <dgriffi at cs.csubak.edu> wrote:
_W0QQitemZ300055639046QQihZ020QQcategoryZ80286QQrdZ1QQcmdZViewItem
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On Thu, 7 Dec 2006, Chris M wrote:
http://cgi.ebay.com/MicroDrive-IDE-Controller-for-Apple-IIe-IIgs
to make one of these in discrete logic:
(if you don't feel like looking, it's an Apple II
IDE/Cflash controller)
Just a rough chip count.
It looks like there are a couple PLAs, some discrete
logic, a
microcontroller of some sort, and an EPROM.
Frankly, I don't think doing
discrete logic for something like this is worth the
trouble. The card
itself seems sufficiently low-tech already.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people
normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
8 Dec
8 Dec
3:37 a.m.
to make one of these in discrete logic:
(if you don't feel like looking, it's an Apple II
IDE/Cflash controller)
http://cgi.ebay.com/MicroDrive-IDE-Controller-for-Apple-IIe-IIgs_W0QQitemZ3…
This is not discrete logic, there is at least one GAL there I can see in
the photo! :oP
6417
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4 comments
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participants (4)
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alexandre-listas＠e-secure.com.br -
chrism3667＠yahoo.com -
dgriffi＠cs.csubak.edu -
gordon＠gjcp.net