OLIVETTI
M4-4X/M4-6X/PCS4XX (BA204X)
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Maximum Onboard Memory |
36MB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
Floppy drive interfaces (2), IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, CD-ROM connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Function |
Label |
Function |
Label |
|
PS/2 mouse port |
CN1 |
CD -ROM connector |
CN6 |
|
Parallel port |
CN2 |
IDE interface |
CN7 |
|
Serial port 2 |
CN3 |
Floppy drive interface |
CN8 |
|
Serial port 1 |
CN4 |
Floppy drive interface |
CN9 |
|
VGA port |
CN5 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Setting |
Label |
Position | |
|
» |
Factory configured - do not alter |
F1 |
N/A |
|
Hard drives installed 1 |
J2 |
Closed | |
|
Hard drives installed 2 |
J2 |
Open | |
|
» |
Setup access disabled |
J12 |
Pins 2 & 3 closed |
|
Setup access enabled |
J12 |
Pins 1 & 2 closed | |
|
» |
Mouse IRQ12 enabled |
J13 |
Pins 2 & 3 closed |
|
Mouse IRQ12 disabled |
J13 |
Pins 1 & 2 closed | |
|
» |
Serial port 1 bootstrap enabled |
J21 |
Pins 2 & 3 closed |
|
Serial port 1 bootstrap disabled |
J21 |
Pins 1 & 2 closed | |
|
» |
Serial port 2 bootstrap enabled |
J25 |
Pins 2 & 3 closed |
|
Serial port 2 bootstrap disabled |
J25 |
Pins 1 & 2 closed | |
|
» |
Floppy drives not write protected |
J33 |
Pins 2 & 3 closed |
|
Floppy drives write protected |
J33 |
Pins 1 & 2 closed | |
|
» |
Factory configured - do not alter |
J45 |
N/A |
|
DRAM | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
4MB |
None |
|
8MB |
4MB |
(1) 1M x 36 |
|
12MB |
4MB |
(1) 2M x 36 |
|
20MB |
4MB |
(1) 4M x 36 |
|
36MB |
4MB |
(1) 8M x 36 |
|
Note: Bank 0 is factory configured and is not configurable. | ||
|
CPU TYPE | ||
|
Setting |
J28 |
J29 |
|
80486SX (PQFP) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
80486SX (PQFP)/80487SX |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
80486SX (PQFP)/80486DX2 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
80486SX (PGA) |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
80487SX |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
80486DX |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
80486DX2 |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
CPU SPEED | |
|
Setting |
J44 |
|
25MHz |
Closed |
|
33MHz |
Open |
|
50iMHz |
Closed |
|
66iMHz |
Open |
|
VIDEO MEMORY | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
512KB |
None |
|
1MB |
512KB |
512KB |
|
Note: Bank 0 is factory installed and is not configurable. The chip sizes are unidentified. | ||
|
MISCELLANEOUS TECHNICAL NOTE |
|
The location of pin 1 is unidentified. |