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- Path: sparky!uunet!olivea!spool.mu.edu!umn.edu!umeecs!emunix.emich.edu!dburnett
- From: dburnett@emunix.emich.edu (Don Burnett)
- Newsgroups: comp.sys.amiga.hardware
- Subject: MicroBotics MBX-1200 (great product great price!)
- Summary: Why you should buy this your new A1200 (IMHO)
- Keywords: A1200, MBX-1200, Microbotics, fpu
- Message-ID: <1993Jan5.164433.29574@zip.eecs.umich.edu>
- Date: 5 Jan 93 16:44:33 GMT
- Sender: news@zip.eecs.umich.edu (Mr. News)
- Organization: Eastern Michigan University
- Lines: 55
-
- A lot of people have been sending me mail asking me to talk more about
- my new MBX-1200 I have installed in the machine. First, price $199
- msrp.. This is for the board with 0K populated. It comes with a PGA
- type MC68881 16MHz chip installed. This chip speeds up math operations
- significantly and is transparent to the machine's operation.. This means
- if you have a 3D renderer or something that will use an 020 power wise
- already, you will be able to use it. Until now all C= equipment that was
- accelerated came with an FPU, so you will need one, if you don't want just
- slow 68000 only software.
-
- The FPU can be replaced by a faster 68881 or '882. You have to get a PGA
- style chip to replace it with. You also can clock it at 25 or 50 Mhz, if
- you have a 25 or 50 MHz chip and a clock crystal. The installation sheet
- warns heavily against trying to overclock the FPU chip saying you could
- damage your Amiga. So, by the right chip and the right crystal if you
- plan to do this.. SysInfo say my CHIP RAM only based 1200HD system is
- "RIGHTEOUS" with this board installed. If you want more specifices, please
- send me email..
-
- The board supports the addition (without removal of the board from your
- system) of one wide-body 72 pin 32-bit wide SIMM. Caution again, don't try
- plugging your cheap run of the mill PC or MAC 8 BIT wide simm.. This plug
- is for the same type of chip you can place inside an A4000. With the
- exception that it supports an 8mb SIMM instead of just the 4mb ones that I
- know the A4000 supports.
-
- The following is a list of supported MICRON SIMMS (you may substitute others
- as appropriate):
-
- 80ns, 72-pin "wide-body"
- SIMM organized N-megabyte x 32 bits.
-
- MICRON PARTS:
-
- MT8D25632 (1MB)
- MT16D51232 (2MB)
- MT8D132 (4MB)
- MT16D232 (8MB)
-
- The instructions suggest that 70 or 60ns SIMMS will cost you more money
- and will provide you with no additional benefits..
-
- All in all it's a great board. No there's no clock. Someone alluded to the
- fact that there might be a jumper pad on the A1200 Motherboard to allow you
- to plug in a CBM clock mod, that doesn't use the CPU slot..
-
-
-
- --
- ******************************************************
- dburnett@emunix.emich.edu
- EMU Mathematics Lab Consultant
- Enabling Solutions
- PO BOX 318, Ypsilanti, MI 48198
- *****************************************************
-