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4386-VC-V 486 VESA Motherboard
- AMI BIOS ID string 40-0100-001437-00101111-080893-4386-F
- 8-30 pin SIMM slots (1-128meg FPM DRAM)
- 2-32bit VESA Local Bus slots
- 6-16bit ISA slots
- 2-8bit ISA slots
- 32-256k cache support in 8-28pin sockets + 2 TAG RAM sockets
- AMI/Award Bios
- VIA VT82C495/VT82C480 Chipset
- DALLAS Real Time Clock
- Supports 80486SX/80486DX/80486DX2 at 25/33/40/50/66MHz
- Possibly Manufactured by: FIC and Hsingtech
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Turbo LED J6 Speaker J9
Turbo switch J7 Power LED + keylock J10
Reset switch J8 32-bit VESA slots SL1+SL2
Monitor type monochrome J1 open
Monitor type colour J1 closed
CMOS normal J2 open
CMOS clear J2 closed
NPU synchronous with CPU JN1 1-2
NPU asynchronous with CPU JN1 2-3
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Cache Bank 0 Bank 1 TAG 0
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32K 4 - 8kx8 none 1 - 8kx8
64K 4 - 8kx8 4 - 8kx8 1 - 8kx8
128K 4 - 32kx8 none 1 - 8kx8
256K 4 - 32kx8 4 - 32kx8 1 - 32kx8
Cache JS1 JS2 JS3 JS4 JS5 JS6
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32K 1-2 1-2 1-2 2-3 2-3 2-3
64K 1-2 1-2 1-2 1-2 1-2 1-2
128K 1-2 2-3 2-3 2-3 1-2 1-2
256K 2-3 1-2 1-2 1-2 1-2 1-2
=======================================================================
CPU Select JI0 JI1 JI2 JI3 JI4 JI5
------------------------------------------------------------
80386DX 2-3 2-3 2-3 2-3 2-3 2-3
80486SX 1-2 1-2 1-2 1-2 1-2 1-2
80487SX 1-2 1-2 1-2 1-2 1-2 1-2
CX486DLC 2-3 2-3 2-3 2-3 2-3 2-3
80486DX/DX2 1-2 1-2 1-2 1-2 1-2 1-2
=======================================================================
CPU Select JI6 JI7 JC1 JC2 JC3 JC4
-----------------------------------------------------------------
80386DX 2-3 2-3 1-2 1-2 1-2 OPEN
80486SX 1-2 1-2 2-3 2-3 OPEN OPEN
80487SX 1-2 1-2 1-2 1-2 2-3 OPEN
CX486DLC 2-3 2-3 1-2 1-2 1-2 1-2,3-4,5-6
80486DX/DX2 1-2 1-2 1-2 1-2 1-2 OPEN
=======================================================================
CPU Speed JK2 JK3 JK4 JV1 (BUS Speed)
-------------------------------------------------------------
20MHz 2-3 2-3 2-3 1-2
25MHz 2-3 2-3 2-3 1-2
33MHz (80386+CX486) 2-3 1-2 2-3 1-2
33MHz 1-2 2-3 1-2 1-2
40MHz (80386+CX486) 2-3 1-2 2-3 2-3
50iMHz 2-3 2-3 2-3 2-3
50MHz 1-2 2-3 2-3 2-3
66iMHz 1-2 2-3 1-2 2-3
=======================================================================
VESA Wait States JV2
-----------------------------
0 wait state 1-2
1 wait state 2-3
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