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Difference between revisions of "Olivetti Personal Computer M24"
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Revision as of 21:53, 28 March 2021
Jumper Settings
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 |