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*ACC Micro...
**Notes:
ACC Microelectronics Corporation

Auctor Corporation is associated with this name.

**ACC82010   AT Chip Set          (286 12.5/16MHz Max)             c88...
**ACC82020   Turbo PC/AT Chip Set (286/386SX 25MHz Max)            c88...
**ACC82021   Turbo PC/AT Chip Set (286/386SX 25MHz Max)            >88...
**ACC82300   386 AT Chip Set (386DX)                               c88...
**ACC82C100  Single-Chip PC/XT Systems-Controller                  c90...
**ACC83000   Model 30 Integrated Chip Set (MCA)                    c88...
**ACC85000/A Model 50/60 Chipset (MCA)                             c88...
**ACC1000    Turbo PC/XT Integrated Bus and Peripheral Ctrl.  04/02/88...
**ACC2036    Single Chip Solution 2036 (286/386SX)              <Jul92...
**ACC2046/ST 486DX/486SX/386DX Single Chip AT                   <Jul92...
**ACC2048    WB 486 Notebook/Embedded Single Chip [no datasheet]     ?...
**ACC2051/NT PCI Single Chip Solution for Notebook Applications    c96...
**ACC2056    ?Pentium 3.3V Notebook               [no datasheet]<Jan96...
**ACC2057    PCI Notebook/Embedded Single Chip    [no datasheet]<Aug96...
**ACC2066NT  486 Notebook/Embedded Single Chip    [no datasheet]     ?...
**ACC2086    486 VL-based System Super Chip Soluti[no datasheet]     ?...
**ACC2087    Enhanced Super Chip (486 Single Chip)              <Aug96...
**ACC2089    486 PCI-based System Super Chip      [no datasheet]     ?...
**ACC2168/GT 32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2178A   32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2268    ?486                                 [no datasheet]     ?...
**ACC????    Maple/Maple-133 486-System-On-Chip   [no datasheet]     ?...
**
**Support Chips:
**ACC2016    Buffer and MUX Logic                                  c96...
**ACC2020    Power Management Chip                                 c92...
**ACC5500    Multifunction I/O Control Chip for PS2 Model 50/60    c88...
**
**Other chips...
*ALD...
*ALi...
*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...
**440 series:
***440FX (Natoma)       05/06/96...
***440LX (Balboa)       08/27/97...
***440BX (Seattle)      c:Apr'98...
***440DX (?)            c:?...
***440EX (?)            c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?)          05/17/99...
***440MX (Banister)     05/17/99...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
**UM82C088     PC/XT Integration Chip                              <91
***Info:...
***Configurations:...
***Features:...
**UM82C230     286AT MORTAR Chip Set                               <91...
**UM82C210     386SX/286 AT Chip Set                               <91...
**UM82C3xx     Twinstar & UM82C336F/N & UM82C39x [no datasheet]      ?...
**UM82C380     386 HEAT PC/AT Chip Set                             <91...
**UM82C480     386/486 PC Chip Set                                 c91...
**UM82C493/491 ??????????????? [no datasheet]                        ?...
**UM8498/8496  486 VL Chipset  "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886  HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890       Pentium chipset [no datasheet]                        ?...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA...
**VT82C580VP   Apollo VP,  Pentium/M1/K5 PCI/ISA System      <02/15/96
***Info:
The  VT82C580VP Apollo-VP  is a  high performance,  cost-effective and
energy efficient  chip set for  the implementation of  PCI/ISA desktop
and   notebook  personal   computer  systems   based  on   the  64-bit
P54C/Pentium/K5/M1 super-scalar processors. CPU and cache interface is
supported up to 66Mhz CPU  external bus speed (with CPU internal speed
up  to  200Mhz  and  above).  The  CPU,  DRAM  and  PCI  bus  are  all
independently powered  so that each of the  bus can be run  at 3.3v or
5v, independently. The ISA bus always runs at 5v.

The VT82C580VP chip set  consists of the VT82C585VP system controller,
the VT82C586  PCI to ISA bridge,  and two instances  of the VT82C587VP
data  buffers. The  CPU bus  is minimally  loaded with  only  the CPU,
secondary cache and the chip  set. The VT82C587VP data buffers isolate
the CPU bus from the DRAM and  PCI bus so that CPU and cache operation
may  run  reliably  at   the  high  frequencies  demanded  by  today's
processors. The  VT82C585VP contains arbitration logic  to support the
UMA (unified  memory architecture) with video/GUI  products from major
video  vendors.  Multiple  deep  FIFOs (thirty-two  double words)  are
included  between multiple  data paths  to allow  efficient concurrent
operation  and  DRAM utilization.   The  VT82C586  PCI  to ISA  bridge
includes  integrated  206-style  IPC  (DMA, interrupt  controller  and
timer),  integrated  keyboard   controller  with  PS2  mouse  support,
integrated DS12885 style  real time clock with extended  128 byte CMOS
RAM, integrated master mode  enhanced IDE controller with full scatter
and  gather  capability, and  integrated  USB  (universal serial  bus)
interface with root hub and  two function ports with built-in physical
layer transceiver. A complete main  board can be implemented with only
six  TTLs. Please refer  to Figure  1 [see  datasheet] for  the system
block diagram.

***Configurations:...
***Features:
o   PCI/ISA Green PC Ready
o   High Integration
    - VT82C585VP system controller
    - VT82C586  PCI to ISA bridge
    - Two instances of the VT82C587VP data buffers
    - Six TTLs for a complete main board implementation
o   Flexible CPU Interface
    - 64-bit P54C, K5  and M1 CPU interface
    - CPU external bus speed up to 66Mhz (internal 200Mhz and above)
    - Supports CPU internal write-back cache
    - Concurrent CPU/cache and PCI/DRAM operation
    - System management interrupt, memory remap and STPCLK mechanism
    - Cyril M1 linear burst support
    - CPU NA#/Address pipeline capability
o   Advanced Cache Controller
    - Direct map write back or write through secondary cache
    - Burst Synchronous (Pipelined or non-pipelined), asynchronous 
      SRAM, and Cache Module support
    - Eight-pin CWE# and GWE# control options
    - Flexible cache size: 0K/256K/512K/1M/2MB
    - 32 byte line size to match the primary cache
    - Integrated 10-bit tag comparator
    - 3-1-1-1 read/write timing for Burst Synchronous SRAM access at 
      66Mhz
    - 3-1-1-1-1-1-1-1 back to back read timing for Burst Synchronous 
      SRAM access at 66Mhz
    - Sustained 3 cycle write access for Burst Synchronous SRAM access 
      or CPU to DRAM and PCI bus post write buffers at 66Mhz
    - 3-2-2-2 (read) and 4-2-2-2 (write) timing for interleaved 
      asynchronous SRAM access at 66Mhz
    - Data streaming for simultaneous primary and secondary cache line 
      fill
    - System and video BIOS cacheable and write-protect
    - Programmable cacheable region and cache timing
    - Optional combined tag and alter bit SRAM for write-back scheme
o   Fast DRAM Controller
    - Concurrent DRAM writeback
    - Four Cache lines (16 quadwords) of CPU/cache to DRAM write 
      buffers
    - Fast Page Mode/EDO/Burst EDO/Synchronous-DRAM support in a mixed 
      combination
    - Mixed 256K/512K/1M/2M/4M/8M/16MxN DRAMs
    - 6 banks up to 512MB DRAMs (maximum four banks of Synchronous 
      DRAM)
    - Flexible row and column addresses
    - 64 bit or 32 bit data width in arbitrary mixed combination
    - 3.3v and 5v DRAM without external transceivers
    - Speculative DRAM access
    - Read around Write capability for non-stalled CPU read
    - Burst read and write operation
    - 4-2-2-2 on page, 7-2-2-2 start page and 9-2-2-2 off page timing 
      for EDO DRAMs at 50/60Mhz
    - 4-2-2-2 on page, 8-2-2-2 start page and 11-2-2-2 off page timing 
      for EDO DRAMs at 66Mhz
    - 5-1-1-1 on page, 8-1-1-1 start page and 10-1-1-1 off page timing 
      for Burst EDO DRAMs at 66Mhz
    - 5-2-2-2-3-1-2-2 back-to-back  access for EDO DRAM at 66Mhz
    - 5-1-1-1-3-1-1-1 back-to-back  access for BEDO DRAM at 66Mhz
    - BIOS shadow at 16KB increment
    - System management memory remapping
    - Decoupled and burst DRAM refresh with staggered RAS timing
    - Programmable refresh rate, CAS-before-RAS refresh and refresh on 
      populated banks only
o   Unified Memory Architecture
    - Supports VESA UMA handshake protocol
    - Compatible with major video/GUI products
    - Direct video frame buffer access
    - Satisfies maximum latency requirement from REQ# to GNT# and from 
      GNT# to REQ#
o   Intelligent PCI Bus Controller
    - 32 bit PCI interface
    - Supports 66Mhz and 3.3v/5v PCI bus
    - PCI master snoop ahead and snoop filtering
    - PCI master Peer Concurrency
    - Synchronous Bus to CPU clock with divide-by-two from the CPU 
      clock
    - Automatic detection of data streaming burst cycles from CPU to 
      the PCI bus
    - Five levels (double-words) of CPU to PCI posted write buffers
    - Byte merging in the write buffers to reduce the number of PCI 
      cycles and to create further PCI bursting possibilities
    - Zero wait state PCI master and slave burst transfer rate
    - PCI to system memory data streaming up to 132Mbyte/sec
    - Sixty-four levels (double-words) of post write buffers from PCI 
      masters to DRAM
    - Thirty-two levels (double-words) of prefetch buffers from DRAM 
      for access by PCI masters
    - Enhanced PCI command optimization (MRL, MRM, MWI, etc)
    - Complete steerable PCI interrupts
    - Supports L1 write-back forward to PCI master read to minimize 
      PCI read latency
    - Supports L1 write-back merged with PCI master post-write to 
      minimize DRAM utilization
    - Provides transaction timer to fairly arbitrate between PCI 
      masters
    - PCI-2.1 compliant
o   Enhanced Master Mode PCI IDE Controller
    - Dual channel master mode PCI supporting four Enhanced IDE 
      devices
    - Transfer rate up to 22MB/sec to cover PIO mode 4 and Multiword 
      DMA mode 2 drivers and beyond
    - Sixteen levels (doublewords) of prefetch and write buffers
    - Interlaced commands between two channels
    - Bus master programming interface for ATA controllers SFF-8038 
      rev.1.0 compliant
    - Full scatter and gather capability
    - Support ATAPI compliant devices
    - Support PCI native and ATA compatibility modes
    - Complete software driver support
o   Universal Serial Bus Controller
    - USB v1.0 and Intel Universal HCI v1.0 compatible
    - Eighteen levels(doublwords) of data FIFOs
    - Root hub and two function parts with built-in physical layer 
      transceivers
    - Legacy keyboard and PS/2 mouse support
o   Plug and Play Controller
    - Dual interrupt and DMA signal steering with plug and play control
    - Microsoft Windows 95 and plug and play BIOS compliant
o   Sophisticated Power Management Unit
    - Normal, doze, sleep, suspend and conserve modes
    - System event monitoring with two event classes
    - One idle timer, one peripheral timer and one general purpose 
      timer
    - More than ten general purpose Input/Output ports
    - Six external event input ports with programmable SMI condition
    - Complete leakage control when external component is in power off 
      state
    - Primary and secondary interrupt differentiation for individual 
      channels
    - Clock stretching, clock throttling and clock stop control
    - Multiple internal and external SMI sources for flexible power 
      management models
    - Two programmable output ports
    - APM 1.1 compliant
o   PCI to ISA Bridge
    - Integrated 82C206 peripheral controller
    - Integrated keyboard controller with PS2 mouse supports
    - Integrated DS12885 style real time clock with extended 128 byte 
      CMOS RAM
    - Integrated USB (universal serial bus) controller with hub and 
      two function ports
    - Integrated master mode enhanced IDE controller with enhanced 
      PCI bus commands
    - PCI-2.1 compliant with delay transaction
    - Four double-word line buffer between PCI and ISA bus
    - Supports type F DMA transfers
    - Fast reset and Gate A20 operation
    - Edge trigger or level sensitive interrupt
    - Flash EPROM and combined BIOS support
o   Built-in nand-tree pin scan test capability
o   0.6um mixed voltage, high speed and low power CMOS process
o   208 pin PQFP for VT82C585VP
o   208 pin PQFP for VT82C586
o   100 pin PQFP for VT82C587VP

**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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