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**May not exist:
M1426 3/486 Single Chip? May be misprint of Ml429.
M1421 rev A1 ??
**Later Chipsets:...
**Other:...
*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...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96
***Notes:...
***Info:...
***Configurations:...
***Features:
System
o 100% PC/AT compatible
o Supports 3.3V Intel Pentium 75/90/100/120 processors at bus
frequencies up to 66MHz
o Supports Cyrix 6x86 processor
DRAM
o Full 64-bit FPM/EDO DRAM controller
- Supports 2-2-2 EDO pipeline at 66MHz bus speed
- Supports 5V or 3.3V DRAM with-out buffers
- Supports up to 512MB
- Controls up to 6 banks
- Post write buffer
o Selectable current drive for DRAM bus
Cache
o L1 Cache supports write-through and write-back modes
o Power managed L2 Cache
- 64KB-2MB cache
- Write-back or write-through modes
- 2-1-1-1 synchronous cache cycles
- 3-1-1-1 pipelined synchronous cache cycles
- Combined tag/dirty SRAM option
ISA/VL/PCI Bus
o Integrated PCI bus with operation up to 33MHz; supports up to
three masters
o CLKRUN# support for PCI
o Distributed DMA support (software-based)
o 100% AT-compatible ISA bus; 3.3V or 5V operation, also supports
ISA bus masters
o VL bus support (slave only)
o Integrated Local Bus IDE supports four drives, which can be bus
masters, modes 4 and 5 supported
Power Management
o Advanced Power Management Unit
o Full CPU System Management Mode (SMM) support
o Full CPU power control through "clock throttling"
o Full system clock control, even CPU clock can be stopped during
APM doze mode
o Both hardware and software controlled power management
o Full peripheral power control
o 13 flexible peripheral timers
o Sixteen power control pins
o I/O trapping captures address and data
o Distributed DMA support (software-based)
o Full peripheral activity tracking
o Automatic peripheral power-up/power-down features
o Full suspend current leakage control
o 36 Power Management Interrupt (PMI) sources
o Eight external power management interrupt sources
o Supports SMBASE re-programmability that allows the cache to be
maintained during system management mode, avoiding cache fills
after returning from SMM
o Proprietary automatic internal pull-up/pull-down resistors
activated only when needed to reduce power consumption
Thermal Management
o Advanced Thermal Management Unit
o Internal mechanism tracks CPU activity and initiates cool down
mode before CPU temperature reaches a damaging level
o External sensor option
Packaging
o 82C556M Data Buffer
- 176 pin TQFP (0.5mm pin spacing)
o 82C557M System Controller
- 208 pin TQFP (0.5mm pin spacing)
o 82C558E Peripheral Controller
- 208 pin TQFP (0.5mm pin spacing)
82C602A RTC/Buffer Companion Chip
o Integrated Real-Time Clock
o Based on Benchmark Bq3285
o 256 bytes battery-backed memory
o Integrates multiplexing/demultiplexing logic, latches, and
buffers
o Eliminates most/all TTL in typical synchronous cache system
o 100 pin TQFP package (0.5mm pin spacing)
o Also available in 100 pin PQFP
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
**Notes:
You eventually get to know when a board is made by PC Chips just by
looking at it.
Here is a test:
1. No manufacture name, or one of the above.
2. If the board has a lots of components that sound like a well known
part but aren't the well known part. i.e. 'HX Pro' instead of
'430HX'
3a. A really good feature set where you think, that's exactly what I'm
looking for.
b. The features don't really work as intended.
4. The price is fantastic.
5. Its disappointing on closer examination.
PC Chips is renowned for making crap products. Some are actually not
too bad, they're no worse than your average brand. However some are a
nightmare either by design or just poorly made. Fake components glued
on is not uncommon. Fake labels over other components. PCB's so thin
they require low insertion force ISA connectors, every trick to save a
few $.
**Early Chipsets:...
**Later Chipsets:
Info sourced from the very useful plasma-online.de:
http://www.plasma-online.de/index.html?content=http%3A//www.plasma-online.de/english/identify/picture/pcchips.html
Chipset name | OEM of | used on mainboard
---------------+---------------------------+-----------------------------------------
HX Pro | ALi M1521/M1523 |
SX Pro | SiS 530/5595 | M598
AGP Pro PC-100 | VIA VT82C598AT/VT82C596B | M577
TX AGP Pro | SiS 5591/5595/6326 |
TX Two | ALi M1531/M1543 |
TX Pro | ALi M1531/M1543 | M560, M575
TX Pro II | SiS 5597/5598 | M571
TX Pro III | VIA VT82C580VPX/VT82C586B | M573
TX Pro IV | SiS 5591/5592 | M570
Top Gun | ALi Aladdin IV+ | M565
VIA GRA | VIA VT8501/VT82C596B | M858LMR
VX Pro | VIA VT82C580VP/VT82C586B |
VX Pro + | VIA VT82C580VPX/VT82C586B |
VX Pro II | UTron / HiNT UT801X |
VX two | VIA VT82C580VP/VT82C586B | Amptron PM-8600A
VX two | VIA VT82C580VPX/VT82C586B | Amptron PM-8600B
BXToo | VIA Apollo Pro | M760V, M761V
BXToo | VIA VT82C693/VT82C686A | M767V
BXPro | SiS 600/5595 | M747
BXCel | ALi M1621/M1543 | M726, M729
BXpert | VIA VT82C691/VT82C596 |
BXTel | VIA Apollo Pro | M730
Xcel 2000 | SiS 620/5595 | M741LMRT
Super TX | SiS 5597/5598 | ASUS SP97-V, SP98-N, Jetway J-TX98R2
Super TX | ALi M1531/M1543 |
Super TX | ALi M1541/M1543 | Biostar M5ALA, M5ALC, Pionex MBD-P5ABx
Super TX3 | SiS 5571 |
Super TX4 AGP | |
GFXcel | SiS 630 |
GFXpro | ALi M1631/M1535D |
T-Bird | SiS730S | M810
---------------+---------------------------+----------------------------------------
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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