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**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91
***Notes:...
***Info:
The Intel 82495XP cache controller and 82490XP cache RAM, when coupled
with a user-implemented memory bus controller, provide a second-level
cache subsystem that eliminates the memory latency and bandwidth
bottleneck for a wide range of multiprocessor systems based on the
i860 XP microprocessor. The CPU interface is optimized to serve the
i860 XP microprocessor with zero wait states at up to 50 MHz. A
secondary cache built from the 82495XP and 82490XP isolates the CPU
from the memory subsystem; the memory can run slower and follow a
different protocol than the i860 XP microprocessor.
***Features:...
**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):
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**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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**82C895 System/Power Management Controller (cached) c:Sep94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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**W86C451 I/O controller for IBM PC/AT/XT <Jul89
***Info:...
***Versions:...
***Features:
o Easily interfaces to most popular microprocessors.
o One-channel version of W860450
o Centronics printer interface
o Independently controlled transmit, receive, line status, and data
set interrupts.
o Programmable baud generator allow division of any input clock by
1 to (2^16 - 1) and generates the internal 16x clock.
o Uses system's 14.31818MHz clock input.
o MODEM control functions (CTS. RTS, DSR, DIR, RI, and DCD).
o Fully programmable serial-interface characteristics:
- 5, 6, 7, or 8-bit characters
- Even, odd, or no-parity bit generation and detection
- l, 1.5 or 2-stop bit generation.
o False start bit detection.
o Internal diagnostic capabilities:
- Loopback controls for communications link fault isolation.
- Break, parity, overrun, framing error simulation.
o Fully prioritized interrupt system controls.
**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...
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