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- XTEND Renaissance Expansion Board - CPU Upgr.
- Init file for @7FAE.ADF
Renaissance Base Card
|JP1-JP4 Receptacles for daughtercard
JP5-JP7 72 pin SIMM sockets
|U20 IDT 6116
U23 Samsung? 74F1762A
I am guessing that the memory supported is 1, 2, and 4MB SIMMs. Remember,
the 50Z was a 286 system- max addressable memory would be 16MB.
486SLC Daughter Card
CPU "Flex Cable"
|JP1-JP3, JP5 Headers to Base
JP4 60 pin header to flex
U13, U14 BIOS?
|U19 TI TX486SLC (25MHz?)
U24 68 pin PLCC socket (Co-pro?)
I have the tape "CPU flex cable" that fits JP4. It extends
towards the rear of the adapter, where it connects to a PLCC header that
fits into the 50Z Type 2 board's CPU socket.
From Frank Sawchuck
The XTend card works with the 16 bit bus of the Model
50Z, but it also doubles as a 16 bit memory only card or a 32 bit memory
only card with the 486 daughter card removed The 486 upgrade cpu complex
is a optional XTend daughter card for the main XTend board. I hope
that I'm making sense, anyway it is a card that I've used in the 50Z as
a cpu / memory upgrade and on 386 and 486 IBM models as a memory only upgrade
From Xtend's Utility Disk
The Renaissance System upgrage significantly accelerates the CPU functions,
including accesses to main memory and to the motherboard resources
(unlike CPU-only modules).
Some of the older 286 PS/2 models may experience problems with some
software due to the processor outrunning motherboard peripherals.
If you are experiencing unusual behavior with your system, the following
utility programs will help you identify whether the problem is speed-related
by changing the speed of the 486SLC processor.
ARB.COM - slows down the processor's cache
OFF.COM - turns off the processor's cache
ON.COM - turns the cache back on (it
is always on after boot-up)
ENSRVR.COM - run this before running the Novell SERVER
If you want the zip file, talk to ME!
AdapterId 7FAE "XTEND Renaissance Expansion
Onboard ROM Location
If a Renaissance CPU upgrade is installed, select <Segment
C000>, otherwise select <ROM Disabled>.
C000-C1FF>, Segment C800-C9FF, Segment D000-D1FF, Segment
D800-D9FF, ROM Disabled
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