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**????? (Profusion) c:99
Chips:
Memory Access Controller (MAC)
Data Interface Buffer (DIB)
CPUs: 8x P-III Xeon Oct
DRAM Types: SDRAM PC100 2-way Interleave dual channel
Max Mem: 32GB
ECC/Parity: ECC
AGP speed: N/A
Bus Speed: 100
PCI Clock/Bus: 1/3 PCI-66/64
**800 series...
*Headland/G2...
**Notes:
InfoWorld Apr 10, 1989 p42 - Video Severn and G-2 Will Merge to form
Headland Technology.
...affiliate of LSI logic.
According to:
http://www.vgamuseum.info/index.php/news/itemlist/category/15-headland-technology
Graphics chips were renamed from GC*** to HT***. In this document any
part no. that differs only by GC/HT have been assumed to be a renamed
part.
**GC101/102 12/16MHz PC/AT Compatible Chip Set c:Feb88...
**GC101/102/103 12/16MHz PC/AT Compatible Chip Set + EMS 4.0 c:Jul89...
**GCK113 80386 AT Compatible Chip Set c:oct89...
**GCK181 Universal PS/2 Chip Set c:Mar89...
**HT11 Single 286 AT Chip [no datasheet] <Aug90...
**HT12/+/A Single 286 AT Chip with EMS support c:Aug90...
**HT18 80386SX Single Chip c:Sep91
***Info:
The HT18 is an advanced PC/AT compatible, single-chip 80386SX 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, with 2 or 4-way
interleaving in both pipelined and non-pipelined modes(18A/B only).
Extended Hardware EMS options include dual sets of 32 registers with
multiple context operation. Revisions A/B support 256K and 1M DRAMs in
1 by 1, 1 by 4, and 1 by 9 device configurations. Rev C supports 4M
devices, as well. A Shadow RAM option for System Video BIOS and dual
or single system ROM BIOS support adds to overall design versatility.
A complete PC/AT compatible system with advanced features may be
implemented with minimal external support logic. The HT18 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. An asynchronous AT Bus clock
allows for a constant 8MHz Bus clock rate for highest bus device
compatibility as defined in IEEE Spec P996. This device is packaged in
a 208-pin Plastic Quad Flat Pack combining several external buffers
into this space saving solution.
***Configurations:...
***Features:...
**HT21 386SX/286 Single Chip (20 MHz) c:Aug91...
**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:...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
**SL9251 80386SX Page Interleave Memory Controller <04/13/90
***Info:...
***Versions:...
***Features:...
**SL9252 80386SX System and Memory Controller <06/12/90...
**SL9350 80386DX Page Mode Memory Controller (16-25MHz 16MB) ?...
**SL9351 80386DX Page Interleave Memory Controller (33MHz) ?...
**SL9352 80386DX System and Memory Controller <06/12/90...
**SLXXXX Other chips...
**
**VT82C470 "Jupiter", Chip Set (w/o cache) 386 [no datasheet] ?
**VT82C475 "Jupiter", Chip Set (w/cache) 386 [no datasheet] ?
**VT82C486/2/3 "GMC chipset" [no datasheet, some info] ?...
**VT82C495/480 "Venus" Chip Set [no datasheet] ?
**VT82C495/491 ? EISA Chip Set [no datasheet, some info] <93...
**VT82C496G Pluto, Green PC 80486 PCI/VL/ISA System <05/30/94...
**VT82C530MV 3.3V Pentium chipset [no datasheet, some info]<05/30/94...
**VT82C570M Apollo Master, Green Pentium/P54C <06/22/95...
**VT82C580VP Apollo VP, Pentium/M1/K5 PCI/ISA System <02/15/96...
**VT82C580VPX Apollo VPX, VPX/97, Pentium with 66/75MHz Bus <01/09/97...
**VT82C590 Apollo VP2, VP2/97, Single-Chip Pentium 66MHz <01/10/97...
**VT82C597/AT Apollo VP3, Single-Chip for Pentium with AGP <10/03/97...
**VT82C598MVP Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97...
**VT8501 Apollo MVP4,Single-Chip 66-100MHz & AGP <11/04/98...
**VT82C680 Apollo P6, Pentium-Pro Chip Set <08/30/96...
**Support chips:
**VT82C505 Pentium/486 VL to PCI Bridge <05/30/94...
**VT82C586/A/B PCI Integrated Peripheral Controller <10/13/96...
**VT82C596/A Mobile PCI Integrated Peripheral Controller <11/05/97...
**VT82C686A/B PCI Super-I/O Integrated Peripheral Ctrl. <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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