Appendix B
Series 18 CPU/Coprocessor Card
There are two reasons to add a Series 18 CPU/Coprocessor
Card to a system with an AMI Mark III Convertible or AMI Mark
IV Screamer motherboard:
●
to upgrade from an 80386 processor to an 80486
processor (an also a WTL4167 math coprocessor), or
●
to add a Weitek WTK3167 math coprocessor to the
system.
Upgrading to an 80486
The AMI Mark IV can be upgraded to a 25 or 33 MHz 80486DX
by adding an AMI Series 18 80486 CPU/Coprocessor Card.
The end user can also add a Weitek WTL4167 math
coprocessor when the 80486 microprocessor is installed.
Series 18 80486 CPU/Coprocessor Card Layout
The layout of the Mark IV 80486/80486SX CPU/Coprocessor
Card is shown on the following page.
Summary of Contents for Mark IV Screamer
Page 1: ...AMI AMI Mark IV Screamer Guide ...
Page 13: ...Mark IV Layout ...
Page 47: ...Warning Message A warning is displayed for Advanced CMOS Setup or Advanced Chip Set Setup ...
Page 59: ...Advanced CMOS Setup Options Continued Typematic Rate and Delay cont d ...
Page 82: ......
Page 83: ......
Page 85: ...AMI Mark IV 80486 CPU Coprocessor Card Layout ...
Page 93: ......
