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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...
*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:...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
**W83977TF WINBOND I/O (Multi I/O) c97
***Info:...
***Versions:...
***Features:
General
o Plug & Play 1.0A compatible
o Support 13 IRQs, 4 DMA channels, full 16-bit address decoding
o Capable of ISA Bus IRQ Sharing
o Compliant with Microsoft PC97 Hardware Design Guide
o Support DPM (Device Power Management), ACPI
o Report ACPI status interrupt by SCI signal issued from any of the
13 IQRs pins or GPIO xx
o Programmable configuration settings
o Single 24/48 Mhz clock input
FDC
o Compatible with IBM PC AT disk drive systems
o Variable write pre-compensation with track selectable capability
o Support vertical recording format
o DMA enable logic
o 16-byte data FIFOs
o Support floppy disk drives and tape drives
o Detects all overrun and underrun conditions
o Built-in address mark detection circuit to simplify the read
electronics
o FDD anti-virus functions with software write protect and FDD
write enable signal (write data signal was forced to be inactive)
o Support up to four 3.5-inch or 5.25-inch floppy disk drives
o Completely compatible with industry standard 82077
o 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps
data transfer rate
o Support 3-mode FDD, and its Win95 driver
UART
o Two high-speed 16550 compatible UARTs with 16-byte send/receive
FIFOs
o MIDI compatible
o Fully programmable serial-interface characteristics:
- 5, 6, 7 or 8-bit characters
- Even, odd or no parity bit generation/detection
- 1, 1.5 or 2 stop bits generation
o Internal diagnostic capabilities:
- Loop-back controls for communications link fault isolation
- Break, parity, overrun, framing error simulation
o Programmable baud generator allows division of 1.8461 Mhz and 24
Mhz by 1 to (2^16-1)
o Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps
for 24 Mhz
Infrared
o Support IrDA version 1.0 SIR protocol with maximum baud rate up to
115.2K bps
o Support SHARP ASK-IR protocol with maximum baud rate up to 57,600
bps
o Support S/W driver for Windows95 and Windows98 (Memphis)
Parallel Port
o Compatible with IBM parallel port
o Support PS/2 compatible bi-directional parallel port
o Support Enhanced Parallel Port (EPP) - Compatible with IEEE 1284
specification
o Support Extended Capabilities Port (ECP) - Compatible with IEEE
1284 specification
o Extension FDD mode supports disk drive B; and Extension 2FDD mode
supports disk drives A and B through parallel port
o Enhanced printer port back-drive current protection
Keyboard Controller
o 8042 based with optional F/W from AMIKKEY-2, Phoenix MultiKey/42
or customer code with 2K bytes of programmable ROM, and 256 bytes
of RAM
o Asynchronous Access to Two Data Registers and One status Register
o Software compatibility with the 8042 and PC87911 microcontrollers
o Support PS/2 mouse
o Support port 92
o Support both interrupt and polling modes
o Fast Gate A20 and Hardware Keyboard Reset
o 8 Bit Timer/ Counter
o Support binary and BCD arithmetic
o 6MHz, 8 MHz, 12 MHz, or 16 MHz operating frequency
General Purpose I/O Ports
o 23 programmable general purpose I/O ports; 1 dedicate, 22 optional
o General purpose I/O ports can serve as simple I/O ports, interrupt
steering inputs, watching dog timer output, power LED output,
infrared I/O pins, general purpose address decoder, KBC control
I/O pins
OnNow Funtions
o Keyboard wake-up by programmable keys (patent pending)
o Mouse wake-up by programmable buttons (patent pending)
Package
o 128-pin PQFP
**W83977EF WINBOND I/O (Multi I/O) <98...
**W83977ATF WINBOND I/O (Multi I/O) <98...
**
**Disk Controller:
**W83759/A/F/AF Advanced VL-IDE Disk Controller <96...
**W83769 Local Bus IDE Solution <94...
**
**UARTS:
**W86C250A UART (equivalent of INS8C250A) [no datasheet]
**W86C450/P Universal Asynchronous Receiver/Transmitter <Jul89...
**W86C451 I/O controller for IBM PC/AT/XT <Jul89...
**W86C452 I/O controller for IBM PC/AT Jul89...
**W86C456 I/O controller [no datasheet] ?
**W860551/P UART with FIFO and Printer Port Controller <94...
**
**Other:...
*ZyMOS...
*General Sources:...
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