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**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93
***Notes:
Information taken from: 82420_PCIset_ISA_and_EISA_Bridges_Mar93.pdf
Intel_Peripheral_Components_1994.pdf*
1995_Intel_Pentium_Processors_and_Related_Components.pdf*2
82378 (Mar-96).pdf
(Errata:1) http://support.intel.com/support/chipsets/420/8510.htm*3
(Errata:2) http://support.intel.com/support/chipsets/420/8511.htm*3
>* datasheet for 82378 is dated Oct'93
>*2 datasheet for 82378 is dated Dec'94
>*3 see archived sources at the end of this section
The March '93 source makes no mention of the ZB variant, indicating
it was released after this date. The Oct'93 datasheet is only 2
pages, a full length version could not be found. Most differences
between the Mar'93 and the Oct'93 are indicated in the text. In
addition, the Mar'93 refers to the 82378IB specifically, the Oct'93
refers to the 82378 in general, and briefly explains the differences
between the IB and ZB variants.
The main difference between the IB and ZB variants is the number of
supported PCI masters and interrupts. The mar'93 datasheet claims that
the IB variant supports four. The Oct'93 source updates this by
claiming it only supports two and states that only the ZB variant
supports four. Perhaps the Mar'93 datasheet is a misprint, or the
chip didn't meet it's intended specification.
In Errata:1, more specifics are given. Dated Aug'93 the following
diff- erences are given:
"
82378IB * Name change from 82378IB to 82378ZB
Changes: * ZB eliminates all known IB errata
* Features/Enhancements include: Interrupt Steering Logic,
System Management Mode (SMM), leadframe change from copper
to Alloy 42.
Timing:
We anticipate production shipments for the 82378ZB to begin in
December 1993..."
Errata:2 gives further details. The document itself is undated, but
Errata:1 is hyperlinked to it. Its text is quoted in the Versions
section.
The Dec'94 datasheet makes no mention of either variant, it just
refers to the 82378. It would appear that this is the ZB variant. The
biggest change is again to the PCI masters. Now it supports 6 PCI
masters and still 4 PCI interrupts. It also now supports Advanced
Power Management. Differences are shown in the text. There are some
additional insignificant minor differences in the text not shown.
The Mar'96 datasheet again refers to the 82378ZB specifically. This
indicates that the chip described in the Dec'94 is *likely* the ZB
variant. This datasheet describes the 82378ZB and the 82379AB. Changes
in this datasheet have not been added to the quoted text below.
Archived sources:
http://web.archive.org/web/20000816013859/http://support.intel.com/support/chipsets/420/8510.htm
http://web.archive.org/web/20000816013854/http://support.intel.com/support/chipsets/420/8511.htm
***Info:...
***Versions:...
***Features:...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**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
Chips:
Memory Access Controller (MAC)
Data Interface Buffer (DIB)
CPUs: 8x P-III Xeon Oct
DRAM Types: SDRAM PC100 2-way Interleave dual channel
Max Mem: 32GB
ECC/Parity: ECC
AGP speed: N/A
Bus Speed: 100
PCI Clock/Bus: 1/3 PCI-66/64
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
**Other chips:
***Video:...
***Disk:
UM8272A/A-4 Floppy Disk Controller 4, 8 MHz Versions
UM82C776 ISA bridge
UM82C865F Super I/O (May be compatible with SMC37C665GT)
UM82C862 ISA IDE controller
UM82C863F VLB IDE controller
UM82C871F VLB IDE controller 1 port
UM83C001 Hard Disk Controller For PC/XT H.D.C
UM83C002 RAM Buffer Controller
UM83C003 Hard Disk Controller Interface For PC/XT MFM H.D.C.
UM83C004 Hard Disk Controller Interface For PC/XT MFM/RLL H.D.C.
UM83C021 Hard Disk Controller For PC/AT H.D.C.
UM83C022 AT HDC Interface For PC/AT H.D.C.
UM8326/B Floppy Disk Data Separator (FDDS) 4, 8 MHz Versions
UM8329/T/B/BT Floppy Disk Controller
UM8388 Single-Chip Floppy Disk Controller Special Design For IBM PC
UM8397 Single-Chip Floppy Disk Controller Design For IBM PC XT
UM8398 Single-Chip Floppy Disk Controller Special Design For IBM PC
UM8660 Super I/O?
UM8670 Super I/O
UM8672 EIDE controller VLB 2 ports
UM8672F VLB IDE controller, LBA support
UM8673F PCI EIDE controller
UM9228-1 Floppy Disk Controller
***Peripheral:...
***Other:...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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