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**CS4021   ISA/486                  (84021/84025)                  c92
***Info: ...
***Configurations:

84021 + 84025

Note: both have no name.  The datasheet confusingly refers to the 4021
CHIPSet  as consisting  of  the  4021 CHIPSet  and  4025 CHIPSet,  i.e
recursive terminology.

This is also  compatible with the Wingine chipset.  When combined with
Wingine this becomes the CS4000 chipset.

***Features:...
**CS4031   CHIPSet                  (84031/84035)              5/10/93...
**CS4041/5 CHIPSet                  (84041/84045)              2/10/95...
**CB8291   ELEAT                    [no datasheet]                 c90...
**CB8295   ELEATsx                  [no datasheet]                 c90...
**82C100   IBM PS/2 Model 30/Super XT                                ?...
**82C110   IBM PS/2 Model 30/Super XT                                ?...
**82C235   Single Chip AT (SCAT)                                   c89...
**82C836   Single Chip 386sx (SCATsx)                              <91...
**F8680/A  PC/CHIP Single-Chip PC                                  c93
***Notes:...
***Info:...
***Configurations:...
***Features
o   3.3V/5V operation, fully static design, and intelligent sleep mode 
    reduce power consumption approximately 60 percent and allow direct
    battery drive.
o   PC-compatible design supports PC software and 8-bit ISA cards.
o   SuperState R mode provides a separate operating environment and 
    enables complete I/O and interrupt monitoring without BIOS 
    modification.
o   Virtual I/O feature allows device emulation as well as I/O 
    monitoring and control.
o   Virtual Interrupts feature allows interrupts to be monitored and/
    or redirected before any operating system, application program, 
    or TSR sees them.
o   26-bit address bus enables 64MB memory map and allows direct 
    support of PCMCIA  memory card.
o   Four-stage pipeline and 14MHz operation give performance 
    comparable to a 286 or 386SX system.
o   Flexible memory management supports PCMCIA cards and up to three 
    banks of PSRAM, SRAM, and/or DRAM.
o   Bank switching and high memory access overcome the 1MB addressing 
    limitation of the 8086 processor, and enable PCMCIA and EMS 
    support.
o   Single CGA controller manages a CRT or LCD panel display and 
    requires only a single 32Kx8 SRAM to minimize power consumption 
    and board space.
o   Visual Map gray scaling provides excellent visual contrast on any 
    LCD panel.
o   16C450-compatible UART supports COM1 or COM2 or can be disabled.
o   Over 100 configuration registers allow flexibility, control, and 
    differentiation in system design.

F8680A adds:

o   Full PCMCIA 2.0 memory and I/O card support ensure compatibility 
    with current and future expansions.

**
**Support Chips:
**64200    (Wingine) High Performance 'Windows Engine'         c:Oct91...
**82C206   Integrated Peripheral Controller                        c86...
**82C601/A Single Chip Peripheral Controller                 <08/30/90...
**82C607   Multifunction Controller                             <Jun88...
**82C710   Universal Peripheral Controller                     c:Aug90...
**82C711   Universal Peripheral Controller II                  c:Jan91...
**82C712   Universal Peripheral Controller II                  c:Jan91...
**82C721   Universal Peripheral Controller III                 c:May93...
**82C735   I/O Peripheral Controller With Printgine            c:Jul93...
**82C835   Single CHIP 386sx AT Cache Controller               c:Apr91...
**F87000   Multi-Mode Peripheral Chip                         11/23/93...
**Other:...
**Disk:...
**Video:...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82395SX     Smart Cache                                     12/17/90
***Notes:...
**82396SX     Smart Cache                                     12/17/90...
**82485       Turbo Cache (and 485Turbocache)                      c90...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91...
**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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*Unresearched:...
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