[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
**A note on VESA support of 486 chipsets.
Many chipsets state  that they support VESA local  bus.  In some cases
these actually  implement VLB somewhat  like PCI, where it  is entirly
decoupled from the CPU bus. Chipsets  that do not state they work with
VLB,  may  be found  on  motherboards  that  contain VLB  slots.   VLB
is  *basically*  The 486  CPU  pinout in  a  slot  form. Unless  these
m/boards contain  some additional  chips, there VLB  implementation is
directly coupled to the CPU.

**Datasheets:...
*_IBM...
*ACC Micro...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**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...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91
***Notes:...
***Info:...
***Versions:...
***Features:
o   Two fully programmable and independent serial I/O ports 
    configurable as PC/AT compatible (WD16C452) or PS/2 
    compatible (WD16C552)
    - Loopback controls for communications link fault isolation for 
      each ACE
    - Line break generation and detection for each ACE
    - Complete status reporting capabilities
    - Generation and stripping of serial asynchronous data control 
      bits (start, stop, parity)
    - Programmable baud rate generator and MODEM control signals for 
      each port
    - Programmable baud rate generator input clock
    - Optional 16 byte FIFO buffers on both transmit and receive of 
      each port for CPU relief during high speed data transfer
    - Programmable FIFO threshold levels of 1 , 4, 8, or 14 bytes on 
      each port
o   Parallel port configurable as a fully Centronics or PS/2 
    compatible, bidirectional parallel port
o   Independently programmable parallel port
o   Interrupt multiplexing logic
    - Selectable multiplexing logic for connecting PC/AT interrupt 
      request lines to the WD76C10 single chip AT controller
o   Clock generation circuitry
    - 80287 coprocessor clock generation
    - WD76C10 and floppy controller clock generation
    - 8042 keyboard clock generation
o   Built-in testability features
o   Hardware or software controllable sleep mode
o   CMOS implementation for high speed and low power requirements 
o   Pulse extension on IRQ inputs
o   84-pin PLCC and PQFP packages

**WD7615     Desktop Buffer Manager                          <04/15/92...
**WD7625     Desktop Buffer Manager                          <10/01/92...
**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
*General Sources:...