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- Path: esygvl.com!not-for-mail
- From: jdp1@esygvl.com (j.d. parsons)
- Newsgroups: comp.sys.amiga.hardware
- Subject: A4000/030 -- MMU
- Date: 4 Jan 1996 14:36:13 -0600
- Organization: E-Systems, Inc. - Greenville, TX
- Message-ID: <4chdnt$dvm@monaco.esygvl.com>
- NNTP-Posting-Host: monaco.esygvl.com
-
- I have an interesting question (well to me, anyhow) concerning
- "upgrading" an A4000/030 to have an MMU:
-
- As I recall, the cpu board in the A4000/030 has a blank spot labeled
- for an MC68020, along with a jumper to use that processor instead of
- the MC68EC030. Does anyone know if it is possible to install a socket
- to that reserved area and somehow convince the '030 to get off the bus
- (short of using a crowbar to remove it from the board)?
-
- The reason for this question: third party vendors dealing in Apple
- Macintosh hardware offer accelerators for the low-end Macs. The Mac
- II (IIx or IIcx, actually) did not come with a plug-in CPU card like
- the A3000/4000 or current Macs, but socketed the CPU chip right on the
- motherboard, ala A2000; _and_ they used 68020's. The vendors include
- or offer an adapter that plugs directly into the CPU socket and allow
- their accelerator (33 Mhz 68040 for $300, 40 Mhz for $400) to plug
- into that adapter. If it is possible to do what I propose in the
- paragraph above, it _might_ be possible to outfit an A4000/030 with
- one of these accelerator kits!
-
- I don't know about component clearance, tho' -- I don't own an
- A4000/030, but realize it's pretty tight in there.
-
- What do you think?
-
- --
- John D. Parsons jdp1@esygvl.com
- Senior Engineer
- E-Systems, a Raytheon Company Greenville, TX, USA
-