Screen Image
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| Computer: |
ALT 286 |
| Processor: |
80286 |
| Screen: VGA |
LCD 640*480 Pixel
Reverse by programming plus contrast and brightness switches |
| Graphics: |
Cirrus Logic |
| Memory: |
4x 1024 KB |
| Harddisk: |
60 MB |
| FDD Drive |
720 KB FD-235HF |
| Extensionslots |
VGA
ISA
AT Keyboard
FDD Floppydrive |
| System: |
DOS 3.3 and DOS 5.0 |
| Printerport |
Centronics |
| Serial Ports |
2x9 Pens. One for mouse |
| Weight: |
7 KG |
SetUp |
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| |
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| Replacement
of |
the Original
Drive !! |
 |
Often the original FD-235HF is out
of order, but can be replaced by a normal 3.5"FDD Floppydrive, BUT.....
The Original drive is powered by an extern wire of the
power supply-unit, so something must be modified in the flatcable.
Click to enlarge the Replacement Diagram
below. Part of it is in Dutch, but there is a translation. |
Replacement Diagram
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FD-235HF Connector
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|
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Accu
ALT386SX/ALT286 Battery Pack (Ni-Cd)
Type Name: BAT - 1
Rating: DC12V 2400mAh
Made in: Amstrad PLC Japan |
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The Memorybanks
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Rear connectors Left
ALT DIP SWITCH SETTINGS
(Bank A):
Sw1=Off, Sw2=On, Sw3=On 512K memory
Sw1=On, Sw2=Off, Sw3=On 1MB memory (default)
Sw1=Off, Sw2=On, Sw3=Off 2MB memory
Sw1=On, Sw2=Off, Sw3=Off 4MB memory
Sw4 (ALT386SX Only) - Page mode - Always On
Sw5 - Wait states - ALWAYS Off
Sw6 - 8/16MHz clock - Off = 16MHz
Sw7 - Mono/Colour - On = Colour
Sw8 - Enable/Disable serial - On = Enable
Sw9 - (ALT386SX Only) - Pipeline - Always ON
Sw10 - Drive B: - type II - Always OFF
(Bank B) are as follows:
Sw1 and Sw2 ON = Onboard VGA enabled
Sw1 and Sw2 OFF = Onboard VGA disabled |
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Rear connectors Right
| Connectors Left:
Serial Printerport
Serial Ports 2 x 9 Pens
Dip Switch System Settings
Coolerfan
Powerswitch: On/Stand By
AC In
Connectors Right:
Expension Slot (With Cdromcard)
Monitor Extern
Dip Switches B |
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| To this ALT 286 I've mounted a 1994 old IBM Cdromplayer. This player
is from the beginning I started with computers. However it is 2x playspeed
and doesn't play all Cd's. Also depending is the colour of the Cd's on
it. Music Cd's will play, but the so burned Cdr's aren't always succesfully.
My own Cdr's will play, those were burned at the speed of 2x in the 90's.
The Cdromplayer is connected to an intern Cdromcard in an ISA slot and
hurray the ALT did own such a slot, inwich the card could be mounted. The
configuration is done by DOS / MOUSE setup. The IBM Cdromlayer is being
seen immediately by the DOS system.
With the DOS installed in this ALT, I can work with this Cdromplayer. |
IBM Cdrom Trackerball Mouse
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IBM Cdrom Connection Cable
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Powersupply Unit
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Servicemanual
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