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**82489DX       Advanced Programmable Interrupt Controller    10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**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
***Notes:...
***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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**82C556M/7M/8E  Viper-N+ Viper Notebook Chipset                  c:96
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82C566/7/8     Viper-Max Chipset Scalable MultiMedia PC Solution   ?...
**82C571/572     486/Pentium                                      c:93...
**82C576/7/8     Viper Xpress  [no datasheet]                        ?...
**82C576/8/9     Viper XPress+ [no datasheet, some info]     <01/16/97...
**82C596/597     PTMAWB Pentium Adaptive Write-back (Cobra)       c:93...
**82C650/1/2     Discovery (Pentium Pro) [no datasheet]              ?...
**82C681/2/6/7   386/486WB EISA                                   c:92...
**82C683         386/486AWB EISA [no datasheet]                      ?...
**82C693/6/7     Pentium uP Write Back Cache EISA                 c:93...
**82C700         FireStar                                         c:97...
**82C701         FireStar Plus                                    c:97...
**82C750         Vendetta      [no datasheet]                        ?...
**82c801         SCWB2 DX Single Chip Solution                    c:92...
**82C802         SCWB2 PC/AT Single Chip [no datasheet]              ?
***Notes:...
**82C802G/GP     System/Power Management Controller (cached)      c:93...
**82C895         System/Power Management Controller (cached)   c:Sep94...
**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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*Winbond...
**W83877TF/TG/TD  WINBOND I/O (Multi I/O)                          c97
***Info:
GENERAL DESCRIPTION

W83877TF/TG  is an enhanced  version from  Winbond's most  popular I/O
chip W83877F --- which integrates  the disk drive adapter, serial port
(UART),  IrDA  1.0  SIR,  parallel  port,  configurable  Plug-and-Play
registers for  the whole chip  --- plus additional  powerful features:
ACPI / legacy power management, serial IRQ, and IRQ sharing.

The disk drive adapter functions  of W83877TF/TG include a floppy disk
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, interrupt
and DMA logic. The wide range of functions integrated into W83877TF/TG
greatly reduces the number of components required for interfacing with
floppy disk drives. W83877TF/TG supports four 360K, 720K, 1.2M, 1.44M,
or 2.88M  disk drives and data  transfer rates of 250  Kb/S, 300 Kb/S,
500 Kb/S,1 Mb/S, and 2 Mb/S.

W83877TF/TG  provides   two  high-speed  serial   communication  ports
(UARTs),  one of  which supports  serial Infrared  communication. Each
UART includes  a 16-byte send/receive  FIFO, a programmable  baud rate
generator,  complete   modem  control  capability,   and  a  processor
interrupt system. One of the UARTs support infrared (IR) IrDA1.0. Both
UARTs provide  legacy speed  with baud rate  up to 115.2K  and provide
advanced speed  with baud rate  up to 230k,  460k, and 921k  bps which
support higher speed Modems.

W83877TF/TG   supports   one   PC-compatible   printer   port   (SPP),
Bi-directional  printer port  (BPP)  and also  Enhanced Parallel  Port
(EPP) and  Extended Capabilities Port (ECP). Through  the printer port
interface pins,  also available are: Extension FDD  Mode and Extension
2FDD  Mode allowing  one  or two  external  floppy disk  drives to  be
connected. This function is  especially valuable for notebook computer
applications.

Winbond W83877TF/TG provides functions that comply with ACPI (Advanced
Configuration and  Power Interface), which includes  support of legacy
and  ACPI power  management  through  SMI or  SCI  function pins.  One
24-bits power  management timer is  implemented with the  carry notify
interrupt.  W83877TF/TG also has  auto power management mode to reduce
the power consumption.

The  serial   IRQ  for  PCI   architecture  is  supported,   ISA  IRQs
(IRQ1~IRQ15)  can be cascaded  into one  IRQSER pin.  W83877TF/TG also
features ISA bus  IRQ sharing and allows two or  more devices to share
the same IRQ pin.

W83877TF/TG  is made  to  fully comply  with  Microsoft PC97  Hardware
Design  Guide. IRQs,  DMAs, and  I/O space  resources are  flexible to
adjust to  meet ISA PnP  requirement. Moreover W83877TF/TG is  made to
meet the specification of  PC97's requirement in the power management:
ACPI and DPM (Device Power Management).

The   configuration  registers   support   mode  selection,   function
enable/disable, and  power down function  selection.  Furthermore, the
configurable  PnP  registers  are  compatible with  the  Plug-and-Play
feature demand of Windows 95  , which makes system resource allocation
more efficient than ever.

Another benefit of W83877TF/TG is  that it is pin-to-pin compatible to
W83877F, and all of the 100-pin  Winbond I/O IC family. Thus makes the
design of applications very convenient and flexible.

***Versions:...
***Features:...
**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...
**
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