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- Msg #5647 posted 01/30/87 by Micromint
- To: ALL USERS About: SB180 9.216 MHz (38 lines)
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-
- ATTENTION ALL SB180 OWNERS !!!!!
-
- 9.216 MHZ SPEED UPGRADE !!!
-
-
- It pains us a lot to admit this, but WE WERE WRONG! For months we've
- been saying that the SB180 would only be available in 6.144 MHz because
- we were explicitly told by Hitachi that higher speed HD64180 chips
- would only be available in PLCC packages. The inscrutable Japanese have
- changed their minds and are now producing and delivering 8 MHz 64180
- chips in shrink DIP packages. These are very conservative specs and the
- new chips easily run at 9.216 MHz.
-
- For SB180 owners this is a bonus. It now means that you can upgrade the
- speed of your SB180 by 50%! Depending on the application, tests show
- that a 9 MHz SB180 can actually run faster than an IBM PC/AT.
-
-
- Upgrading your SB180 from 6.144 MHz to 9.216 MHz can be easily done if
- you can unsolder a crystal and replace it with a new one. The rest of
- the change merely involves unplugging and replacing the monitor EPROM,
- switching a few LSTTL chips and the processor with faster equivalents,
- and updating some processor speed dependent programs in your operating
- system.
-
- The 9 MHz Upgrade Kit includes a new crystal, 8 MHz HD64180, monitor
- EPROM, three high speed "S" TTL chips, software diskette, and
- instructions.
- order SB180-9UPG ..................... $79.00
- (ppd in USA)
-
- Order your SB180-9UPG from:
- Micromint Inc.
- 4 Park St.
- Vernon, CT 06066
-
- orders: (800) 635-3355 Information: (203) 871-6170 Telex: 643331
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