OLIVETTI
M24/M24SP
|
Processor |
8086 |
|
Processor Speed |
8/10MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
640KB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
Floppy drive interface, parallel port, serial ports (2) |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Floppy drive interface |
CN1 |
Parallel port |
J4 |
|
Serial port 1 |
J3 |
Serial port 2 |
J5 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Switch |
Position | |
|
|
256KB memory chip not used |
DIPSW0/5 |
On |
|
256KB memory chip used |
DIPSW0/5 |
Off | |
|
|
NPU disabled |
DIPSW0/6 |
On |
|
NPU enabled |
DIPSW0/6 |
Off | |
|
|
UART type select 8250 |
DIPSW0/7 |
On |
|
UART type select 8530 |
DIPSW0/7 |
Off | |
|
|
BIOS type select 2732 (M24 only) |
DIPSW0/8 |
On |
|
BIOS type select 2764 (M24 only) |
DIPSW0/8 |
Off | |
|
|
No memory installed in Bank 0 (M24SP only) |
DIPSW0/8 |
On |
|
Memory installed in Bank 0 (M24SP only) |
DIPSW0/8 |
Off | |
|
|
Floppy drive tracks per inch select 48 (320KB drive) |
DIPSW1/1 |
On |
|
Floppy drive tracks per inch select 96 (640KB drive) |
DIPSW1/1 |
Off | |
|
|
Floppy drive start up speed select slow |
DIPSW1/2 |
On |
|
Floppy drive start up speed select fast |
DIPSW1/2 |
Off | |
|
|
HDU ROM code select on mainboard |
DIPSW1/3 |
On |
|
HDU ROM code select on controller |
DIPSW1/3 |
Off | |
|
|
Display controller select standard |
DIPSW1/4 |
On |
|
Display controller select non standard |
DIPSW1/4 |
Off | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
128KB |
(18) 44256 |
NONE |
|
256KB |
(18) 44256 |
(18) 44256 |
|
512KB |
(18) 44100 |
NONE |
|
640KB (M24SP only) |
(18) 44100 |
(18) 44256 |
|
640KB |
(18) 44256 |
(18) 44100 |
|
DRAM SWITCH CONFIGURATION | ||||
|
Size |
DIPSW0/1 |
DIPSW0/2 |
DIPSW0/3 |
DIPSW0/4 |
|
128KB |
Off |
On |
On |
On |
|
256KB |
On |
Off |
On |
On |
|
384KB |
Off |
Off |
On |
On |
|
512KB (mainboard only) |
On |
On |
On |
Off |
|
512KB (mainboard and expansion card) |
On |
On |
Off |
On |
|
640KB |
Off |
On |
Off |
On |
|
640KB (mainboard only) |
Off |
On |
On |
Off |
|
VIDEO CONFIGURATION | ||
|
Type |
DIPSW1/5 |
DIPSW1/6 |
|
IBM B/W display |
Off |
Off |
|
40 x 25 |
Off |
On |
|
80 x 25 |
On |
Off |
|
FLOPPY DRIVE CONFIGURATION | ||
|
Drives installed |
DIPSW1/7 |
DIPSW1/8 |
|
1 |
On |
On |
|
2 |
Off |
On |