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**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:
Date source: 1995_Intel_Pentium_Processors_and_Related_Components.pdf
Information taken from:
1995_Intel_Pentium_Processors_and_Related_Components.pdf*
8249x Cache controllers.pdf**
>* Datasheet dated Nov'94
>** Datasheet undated, whole document dated '95
The info and features section have been solely sourced from the first
source. The second source provides far more detail. Additional
information in the configurations section and below have been sourced
from the second.
"Although the 82497 Cache Controller is part of the Pentium processor
(735\90, 815\100, 1000\120, 1110\133) CPU-Cache Chip Set and the 82496
Cache Controller is part of the Pentium Processor (510\60, 567\66)
Chip Set, the two parts are functionally identical except for the
differences noted in this section." - p491
Aside from some minor differences in pin configuration, the main
difference is the direct support for 3.3V processors. This chipset is
still a 5V part. The cache operates at bus speed, max 66MHz.
This chip was used on the Pentium 90MHz CPU complexes of Intel's
Xpress platform. Specifically the BXCPUPENT90 (Single 90MHz, 16
82492s). Also found on IBM 9595/Server 500 Pentium 90MHz complexes.
***Info:...
***Configurations:...
***Features:...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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**W83777F/87F Power I/O (Multi I/O) <95
***Info:
GENERAL DESCRIPTION
The W83777F/W83787F integrates a disk drive adapter, serial port
(UART), parallel port, IDE bus interface, and game port decoder onto a
single I/O chip. The W83777F/W83787F is an enhanced version of the
W83767F Power l/O chip. The enhanced functions include one 2.88MB
floppy disk controller (W83777F only), two 16550 compatible UARTs, and
one parallel port with EPP mode, ECP mode, and joystick mode.
The disk drive adapter functions of the W83777F/W83787F include a
floppy disk drive controller compatible with the industry standard
82077/765, data separator, write pre-compensation circuit, decode
logic, data rate selection, clock generator, drive interface control
logic, and interrupt and DMA logic. The wide range of functions
integrated onto the W83777F/W83787F greatly reduces the number of
components required for interfacing with floppy disk drives. The
W83777F/W83787F supports four 360K, 720K, 1.2M, 1.44M, or 2.88M
(W83777F only) disk drives and data transfer rates of 250KB/S,
300KB/S, 500KB/S, and 1MB/S (W83777F only).
There are two high-speed serial communication ports (UARTs) on the
W83777F/W83787F. The UARTs include 16-byte send/receive FIFOs, a
programmable baud rate generator, complete modem control capability,
and a processor interrupt system.
The W83777F/W83787F supports three optional PC-compatible printer
ports: 378b, 278h and BBCh. Additional bi-directional l/O capability
is available by hardware control or software programming. The parallel
port also supports the Enhanced Parallel Port (EPP) and Extended
Capabilities Port (ECP). The W83777F/W83787F supports two embedded
hard disk drive (AT bus) interfaces and a game port with decoded
read/write output.
The W83777F/W83787F's Extension FDD Mode and Extension 2FDD Mode allow
one or two external floppy disk drives to be connected to the computer
through the printer interface pins in notebook computer applications.
The Extension Adapter Mode of the W83777F/W83787F allows pocket
devices to be installed through the printer interface pins in notebook
computer applications according to a protocol set by Winbond, but with
upgraded performance.
The JOYSTICK mode allows a joystick to be connected to a parallel port
with a signal switching cable.
The configuration register supports address selection, mode selection,
function enable/disable, and power down function selection.
***Versions:...
***Features:...
**W83877F WINBOND I/O (Multi I/O) <96...
**W83877TF/TG/TD WINBOND I/O (Multi I/O) c97...
**W83977F/G/AF/AG WINBOND I/O (Multi I/O) c97...
**W83977TF WINBOND I/O (Multi I/O) c97...
**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:...
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