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**82395SX Smart Cache 12/17/90
***Notes:...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**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...
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*UMC...
**UM82152 Cache Controller (AUStek A38152 clone) <91
***Info:
The UM82152 is a high-performance cache controller for Intel 80386
based systems and provides high levels of integration and
functionality. It interfaces directly to the 80386; no additional
support logic is required. A complete 32-kilobyte cache can be
designed with just one UM82152 and four 8K by 8-bit static RAMs.
The UM82152 architecture enables easy design-in with current speed
versions of the 80386, and simple migration to faster version
processors with no alteration to system or memory design.
The 80386, operating in pipelined mode with the UM82152, runs with
zero wait states during a cache hit (requested data is present in
cache). If the data is not present (cache miss), it is fetched from
main memory by the UM82152. This approach yields the high-speed
performance of fast SRAMs for code and data most frequently used,
while providing design economies (such as board space savings and
lower component costs) by storing infrequently used code and data in
slower dynamic RAM (with cycle times greater than 125 nanoseconds)
that can be located in large memory banks either on-board or
off-board.
The reduced system bus traffic inherent in the UM82152 implementation
produces system performance gains by freeing the bus for use by other
devices.
***Versions:...
***Features:...
**UM82C852 Multi I/O For XT <91...
**UM82C206 Integrated Peripheral Controller <91...
**UM82c45x Serial/Parallel chips ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
**VL82C380 Single chip 386DX PC/AT Controller +on-chip cache ?
***Info:...
***Configuration:...
***Features:
o Highly integrated system solution using VL82C380 single-chip
ISA controller, VL82C113A Combination I/O chip and 3 TTLs
o Supports one- or two-bank write-back cache
- External TAGs
- 32 Kbyte to 1 Mbyte cache size
- 0 or 1 wait state writes
- Separate dirty RAM not required; first write to clean, valid
line sets dirty bit
o Caches main system DRAM only
o Maintains full coherency during DMA/MASTER mode cycles
o Optional remap of video and hard disk ROM BIOS onto motherboard,
allowing use of single BIOS ROM
o Optional bus acceleration for video accesses, with programmable
address regions
o Software-configurable
o Utilizes proven 8254, 8237, 8259 megacalls used in all previous
VLSI Technology PC/AT chipsets
o High-performance memory controller:
- One wait state red up to 33 MHz, Zero wait state reads up to
40 MHz
- Automatic configuring of Bank start address
- Each bank individually configurable for any supported DRAM type
- shadow RAM support form 640K to 1M in 16K segments
- Staggered refresh reduces power supply peak currents
- Decoupled-mode refresh improves performance
- Programmable refresh frequency for support of slow-refresh DRAMs
- Up to 64 Mbytes of motherboard memory in one to four banks using
256K, 1M, and/or 4Mbit DRAM, all motherboard memory is cacheable
- Direct-drive up to 2 banks (32 Mbyte) of motherboard memory
- Two-way page mode interleave
- Supports 32-bit ini-interleaved or interleaved configurations
- Programmable RAS/CAS timing supported for Cycle-start, Trp,
Trcd, and Tacs
**VL82C325 VL82C386SX System Cache controller ?...
**VL82C335 VL82C386DX System Cache ctrl. [no d.sheet] ?...
**VL82C315A/322A/3216 Kodiak 32-Bit Low-Voltage Chip Set ?...
**VL82C420/144/146 SCAMP IV [no datasheet, some info] c93...
**VL82C480 System/Cache/ISA bus Controller ?...
**VL82C481 System/Cache/ISA bus Controller c92...
**VL82C486 Single-Chip 486, SC486, Controller ?...
**VL82C425 486 Cache controller ?...
**???????? Cheetah 486, PCI [no datasheet] ?...
**VL82C3216 Bus Expanding Controller Cache with write buffer ?...
**VL82C521/522 Lynx/M ?...
**VL82C530 Eagle Ð c95...
**VL82C541/543 Lynx c95...
**VL82C591/593 SuperCore 590 c94...
**VL82C594/596/597 Wildcat c95...
**I/O Chips:
**VL82C106 Combination I/O chip ?...
**VL82C107 SCAMP Combination I/O chip ?...
**VL82C108 TOPCAT Combination I/O chip ?...
**VL82C110 Combination I/O chip ?...
**VL82C113 SCAMP Combination I/O chip ?...
**VL82C114 Combination I/O chip ?...
**Video: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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