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**Other:
M2228 	Video
M2301 	Video
M2302 	Video
M2308 	Video
M2401 	Video
M3125 	Video
M3135 	Video (super VGA)
M3143 	Video
M3145 	PCI Video
M3145 	VLB/PCI 3D Video
M3147V 	PCI Video
M3149 	Video
M3151 	PCI 3D Video, 4MB MAX
M3307   MPEG    Video Decoder Chip
M3309   MPEG-II Video Decoder Chip
M3321   MPEG-II A/V Decoder Chip
M3351   MPEG-II Video Decoder Chip
M4803 	PCI EIDE Controller
M5105 	VLB Super I/O Controller FDD/HDD/LPT/2xCOM/GAME	 
M5113   Superset of 5105, with PnP, ECP/EPP LPT and IR port
M5119 	Super I/O
M5123 	Super I/O   PnP/2xCOM/IR port/Keyboard (For Phoenix BIOS)
M5125 	same as  M5123 but for AMI
M513? 	Super I/O PnP/Keyboard
M5135F 	Super I/O PnP/Keyboard/IR
M514? 	Super I/O PnP/Keyboard/IR/2xCOM/  
M5213 	PCI IDE
M5217/H	Super I/O
M5219 	PCI? Bus mastering EIDE
M5225 	PCI? EIDE
M5229 	PCI? Bus mastering EIDE
M5235 	Super I/O
M5237 	PCI USB Host
M5240 	PCI? EIDE
M5241 	PCMCIA Bridge
M5242 	? 
M5244 	FDD
M5427 	PCI-AGP Bridge
M5451 	Audio 
M5453 	Modem 
M5455 	Audio  

*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...
**82498/493   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
**HT21          386SX/286 Single Chip (20 MHz)                 c:Aug91
***Info:
The HT21  is an  advanced PC/AT compatible,  single-chip 80386SX/80286
design solution.   This highly  integrated single chip  allows simple,
low cost  system design options while featuring  high performance, low
power  consumption,  and minimum  board  space requirements.  Advanced
memory management features  include support for page mode,  2 or 4-way
interleaving in  both pipelined and  non-pipelined modes. The  LIM 4.0
hardware implementation  features dual sets of 32  registers with full
context support for highest performance Optimization of extended local
memory  accesses. An  advanced  EMS hardware  write-protect option  is
provided. The HT21 supports 256K and 1M DRAMs in l by 1, 1 by 4, and 1
by 9 device configurations for up  to 8MB of on-board system memory. A
flexible Shadow  RAM option for  System and Video  BIOS as well  as 8-
16-bit BIOS Options adds to overall design versatility.

A  complete PC/AT  compatible  system with  advanced  features may  be
implemented with minimal external support logic. The HT21 performs all
CPU  and peripheral support  functions in  a single  chip.  Integrated
device  functions include  DMA Controllers,  a Memory  Mapper, Timers,
Counters, Interrupt  Controllers, a Bus Controller  and all supporting
circuitry for PC  core logic requirements. The chip  also contains all
the  necessary  address buffers,  data  transceivers, memory  drivers,
parity  checking   and  supporting  circuitry  for   a  complete  high
performance computer solution. An asynchronous AT Bus clock allows for
a constant 8MHz Bus clock rate for highest bus device compatibility as
defined in  IEEE Spec P996.   In controlled bus applications  the HT21
supports up to a  12 MHz Bus Clock rate. This device  is packaged in a
208-pin Plastic Quad Flat Pack combining several external buffers into
this space saving solution.

***Configurations:...
***Features:...
**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91...
**HT25          3-volt Core Logic for 386SX                    c:Dec92...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:...
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