[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
*_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...
**440 series:
***440FX (Natoma)       05/06/96
Chips:         
[82441FX] (PMC) [82442FX] (DBX) [82371SB] (PIIX3)
CPUs:          Single or Dual P-Pro/P-II
DRAM Types:    FPM EDO BEDO
Mem Rows:      8         
DRAM Density:  16Mbit 64Mbit               
Max Mem:       1GB                  
ECC/Parity:    Both  
AGP speed:     not supported
Bus Speed:     50 60 66    
PCI Clock/Bus: 1/2 PCI 2.1              


***440LX (Balboa)       08/27/97...
***440BX (Seattle)      c:Apr'98...
***440DX (?)            c:?...
***440EX (?)            c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?)          05/17/99...
***440MX (Banister)     05/17/99...
**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...
**WD7600A/LP/LV System Chip Set for 80286 or 80386SX         <11/25/91
***Info:
****General:...
****WD76C10A/LP/LV (System Controller):
GENERAL DESCRIPTION
The  WD76C10A is designed  for use  in a  high performance  desktop AT
computer, using  an 80286 or  803868X processor of  up to 25  MHz. The
WD76C10ALP has the features of the WD76C10A and is designed to operate
in a high performance  notebook/laptop AT compatible computer using an
80286 or 803868X processor. With the exception of the 80286 modes, the
WD76C10ALV has all the capabilities of the WD76C10ALP plus the ability
to operate with a 3.3 volt power supply.

1.3.1 WD76C10A
The  WD76C10A  contains  a  high performance  memory  controller  with
programmable modes of operation. It supports non-page, zero wait state
read and write memory control. A maximum of four banks of 64 Kbit, 256
Kbit,  1 Mbit or  4 Mbit  DRAM may  be controlled,  allowing up  to 16
Mbytes  of  real or  32  Mbytes  EMS  (Expanded Memory  Specification)
memory. Any combination  of DRAM sizes may be  used.  in addition, the
WD76C10A controls page mode DRAM  or static column DRAM with page mode
operation.

The on-board memory can be  allocated either to extended or EMS memory
in  128  Kbyte  increments.   Forty  EMS  registers  support  EMS  4.0
multitasking.  An internal self-tuning delay  line is used for DMA and
Bus  Master memory  cycles.  Delay  line information  is also  used to
adjust the strength of the  output drivers. This stabilizes the output
rise  and  fall  times,  reducing  ground  noise  and  electromagnetic
interference (EMI).

EMS access  to external  RAM or ROM  may be  used to support  Kanji or
other extended character sets.

The WD76C10A interfaces with either an 80286 or 803868X processor. The
processor type is automatically sensed  at power up. No extra logic is
required  to interface with  the 803868X.  The variation  in processor
reset propagation delay is controlled  to meet the strict reset timing
of the 803868X.

1.3.2 WD76C10ALP

In  addition to  supporting  all  the features  of  the WD76C10A,  the
WD76C10ALP  also  supports  portable  notebook/laptop  computers.   To
provide  this support, the  WD76C10ALP makes  use of  Power Management
Control  (PMC)  for  powering   down  peripherals  or  the  processor,
processor  stop clock,  slow  clock, automatic  processor clock  speed
switching modes and CAS before RAS slow refresh. Suspend and resume is
supported when  low power  DRAM is refreshed  while the  processor and
other power consuming devices are  turned off. The power drain for the
core logic and  VGA controller is less than 5 mA  in this mode.  Power
and  clock  speed  may   be  controlled  by  the  keyboard  processor,
transparently to the 80286 or 80386SX.

The  System  Activity  Monitor  (SAM)  provided  by  WD76C10ALP  is  a
transparent feature  that replaces the  functions previously performed
by software. It senses when the  system has been idle for a previously
programmed period of time and  determines a clean break point in which
to perform power down activities such as suspend.  

1.3.3 WD76C10ALV

The WD76C10ALV supports all of the 803868X mode functions and features
supplied by  the WD76C10ALP. In addition, the  WD76C10ALV has improved
the PC  notebook/laptop design  by operating with  a 3.3 volt  +- 0.3V
power supply, which nearly doubles the battery life.

The WD76C10ALV does not support 80286 modes.

The  DC operating  Characteristics and  AC timing  specifications that
differ from the WD76C10A/LP are presented in the Appendix.

****Other Chips:...
***Configurations:...
***Features:...
**WD7700/LP     System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD7855        System controller for 80386SX                <09/25/92...
**WD7900/LP/LV  System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD8110        System controller for 80386DX/486            <11/30/93...
**
**Support Chips:
**WD76C20x   Floppy, RTC, IDE and Support Logic Device       <11/25/91...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**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:...