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**F87000   Multi-Mode Peripheral Chip                         11/23/93
***Info:
The F87000  Multi-Mode Peripheral  Chip is a  companion to  the F8680A
PC/CHIP single-chip PC. By strapping  pins to select the desired mode,
the F87000 device becomes one of four integrated peripheral chips that
extend the functionality of PC/CHIP.

Chips and Technologies, Inc. has designed the F87000 chip specifically
for use  with the F8680A  microchip to accommodate  portable computing
devices   and  embedded   control   applications  where   integration,
conservation of board space, and power consumption are critical.

In  PCMCIA  card  implementations,  card buffering  and  isolation  is
recommended for  design robustness,  especially in rugged  use enviro-
nments.  The buffering ensures that  the PCMCIA card receives a strong
clean  signal, while the  isolation provides  both the  protection for
"hot card insertion" and is hardwired for turning off power to a card.
Hardware isolation,  supported with Power  Management SuperState code,
minimizes the system’s power  consumption.  PCMCIA card slots that are
not properly buffered and isolated run  a high risk of a system crash/
failure if the cards are inserted/removed while the slot is powered.

The PC/CHIP F87000 is designed to be used in four modes. 
o    Mode 1 ---- Single PCMCIA card buffering support provides:
     • 20-bit address buffer.
     • 16-bit bidirectional data buffer.
     • Buffering for five control signals.
o    Modes 2 and 3 ---- Dual PCMCIA card buffering support provides:
     • Individual address buffering (64MB each).
     • Individual data bus buffering.
     • Two OR gates.
o    Mode 4 ---- Multifunctional mode provides:
     • Keyboard circuitry interfacing to a 16 x 8 keyboard matrix.
     • Clock divider conversion of 14.31818MHz to 1.8432MHz output 
       (divide by 7.77).
     • Parallel printer port.
     • IDE interface.
     • 7-bit configuration ports plus external select for port 
       expansion.

***Versions:...
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*Contaq  . . . . . [no datasheets, some info]...
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**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91...
**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94...
**82498/493   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**85C360         ISA 386DX Single Chip chipset [no datasheet]        ?
***Notes:...
**85C401/402     ISA 486DX/SX Cache chipset    [no datasheet]        ?...
**85C406/5/411/420/431  EISA 386/486 Chipset   [no datasheet]      c91...
**85C460         ISA 386DX/486 Single Chip     [no datasheet]        ?
**85C461         ISA 386DX/486 Single Chip     [no datasheet]        ?...
**85C471/407     Green PC ISA-VLB 486 Single Chip                  <94...
**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95...
**85C501/502/503 Pentium/P54C PCI/ISA Chipset                <01/09/95...
**5101/5102/5103 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5120           Pentium PCI/ISA Chipset (Mobile)            <01/28/97...
**5501/5502/5503 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5511/5512/5513 Pentium PCI/ISA                             <06/14/95...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
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