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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...
**HT22 386SX/286 Single Chip (25 MHz) c:Sep91
***Info:
The HT22 is an advanced PC/AT compatible, single-chip 80386SX/80286
system design solution. This highly integrated single chip allows
simple, low cost system design options while featuring high perfor-
mance, low power consumption, and minimum board space require-
ments. Advanced memory management features include support for page
mode, 2 or 4-way interleaving in both pipelined and non-pipelined
modes. The EMS 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 has been added for maximum EMS 4.0
compatibility. The HTZ2 supports 256K, 1M and 4MB DRAMs in 1 by 1 and
1 by 4 device configurations for up to 20MB of on-board system memory.
16MB is addressed directly by system resources, the remainder
addressed by the EMS mode.
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 HT22 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 compat-
ibility as defined in IEEE Spec P996. This device is packaged in a
208-pin Plastic Quad Flat Pack.
***Configurations:...
***Features:...
**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)...
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*OPTi...
**82C898 System/Power Management Controller (non-cache)c:Nov94
***Notes:...
***Info:
Overview
The 82C898 provides a highly integrated solution for fully compatible,
high performance PC/AT platforms. The 82C898 supports 486SX/DX/DX2/DX4
and P24T microprocessors in the most cost effective and power
efficient designs available today. For high-end system applications,
this device offers optimum performance for systems running up to
50MHz.
Based fundamentally on OPTi’s proven 82C801 and 82C802 design
architectures, the 82C898 adds additional memory configurations and
extensive power management control for the processor and other
motherboard components.
The 82C898 supports the latest in write-back processor designs from
Intel, AMD, and Cyrix, as well as supporting the AT bus and VESA local
bus for compatibility and performance. It also includes an 82C206
Integrated Peripherals Controller (IPC), all in a single 208-pin PQFP
(Plastic Quad Flat Pack) for low cost.
Power Management
Figure 2-1 [see datasheet] exemplifies the flexibility of an
82C898/82C602-based designs GREEN strategy. System designs can easily
accommodate both SLe and non-SLe CPUs. If an Intel non-SLe CPU is
used, SMI#, SMIAOT#, and FLUSH# are no connects. One design can easily
accommodate both types of processors with minimal changes for
upgrades.
***Configurations:...
***Features:...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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