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386 Titan Planar
486 Titan Planar
Switch Settings
CMOS Discharge
System Firmware
ROM Images
BIOS Revision Levels
Information sourced from Mitsubishi Electric's Insight CD pages.
386 Titan Planar
Equipped with a 80386DX-25 processor, 82385-25
cache controller, 64 KB of 35 ns SRAM.
486 Titan Planar
This is the same planar as above but with a 486 daughterboard plugged into
the 80386 and 82385 sockets and a bus extension board providing additional MCA
slots.
The daughterboard holds the 80486DX-25 processor, the 82385-25 cache
controller (the 82485 version wasn't available at the time), 128 KB of 25 ns
SRAM, and some PALs. This two-way associative cache subsystem dubbed
"Hypercache" is claimed to have a 95 to 96% hit rate.
The plug-in bus extension provides eight MCA expansion slots (4x 32-bit and
4x 16-bit).
Switch Settings
SW1
| Pos. |
On |
Off |
| 1 |
Pipeline 386 enable |
Pipeline 386 disable |
| 2 |
Pipeline 385 enable |
Pipeline 385 disable |
| 3 |
ROM's disabled |
ROM's enabled |
| 4 |
Refresh enabled |
Refresh disabled |
SW2
| Pos. |
On |
Off |
| 1 |
RAM configuration |
| 2 |
RAM configuration |
| 3 |
RAM configuration |
| 4 |
CPU speed select |
| 5 |
CPU speed select |
| 6 |
Do not alter from ON |
| 7 |
Weitek present * |
Weitek not present |
| 8 |
Do not alter from ON |
| * PAL required to enable |
RAM
| Memory Fitted |
SW2 Position |
SIMM Capacity |
| 1 |
2 |
3 |
Bank 0 |
Bank 1 |
| 1 MByte |
Off |
Off |
Off |
256k |
- |
| 1 MByte |
On |
Off |
Off |
256k |
- |
| 2 MByte |
Off |
On |
Off |
256k |
256k |
| 4 MByte |
Off |
Off |
On |
1 M |
- |
| 5 MByte |
On |
On |
Off |
256k |
1 M |
| 8 MByte |
On |
Off |
On |
1 M |
1 M |
| 12 MByte |
Off |
On |
On |
2 M |
1 M |
| 16 MByte |
On |
On |
On |
2 M |
2 M |
Clock speed Switches
| CPU speed MHz |
SW2 Position |
| 4 |
5 |
| 25 MHz |
Off |
On |
SW3
| No function |
Either setting acceptable. |
SW4
| All ON |
BNC Connector Active (Thin Ethernet) |
| All OFF |
D-Shell Connector Active (Thick Ethernet) |
CMOS Discharge
To drain CMOS disconnect the lead running from the battery mounted on the
expansion card holder and allow approx. 20 minutes to drain.
System Firmware (POST & BIOS)
Firmware stored in EPROM (2x 64 KB).
ROM Images
ft10221.zip - VX FT Server ROM BIOS 1.02.21 (LO+HI, zipped)
BIOS Revision Levels
BIOS Revision Summary (ver. 1.02.12 - 1.02.21)
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