Olympia Disque with IKBS » History » Revision 25
Revision 24 (laforge, 09/29/2022 05:57 PM) → Revision 25/26 (laforge, 10/01/2022 11:14 AM)
h1. Olympia Disque with IKBS
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The *Olympia Disque* is an electronic daisywheel typwriter with single-line alphanumeric display, battery-buffered RAM and a proprietary 2" floppy disk drive.
It was possible to enable the Olympia Disque for Teletex, either with an internal add-on-board (IKBS) or with an external device.
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h2. Hardware
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{{thumbnail(olympia_disque_without_top_cover.jpg,size=500)}}
{{thumbnail(olympia_disque_back_connectors.jpg,size=500)}}
h3. Mainboard
The Mainboard comes assembled in a stack with two daughter boards:
{{thumbnail(olympia_disque_mainboard_stack.jpg,size=500)}}
The actual mainboard is the bottom board in the stack:
{{thumbnail(olympia_disque_mainboard_top.jpg,size=500)}}
{{thumbnail(olympia_disque_mainboard_bot.jpg,size=500)}}
The mainboard hosts
* 1x NEC D8085AHC CPU (socketed)
* 4x TI TMS2764JL-35 EPROMs (IS1..IS4)
* 1x Fujitsu MBM27128-30 EEPROM (IS54 via daughterboard 73.410-4066.1)
* 5x HM6116LP-3 RAM (onboard)
* 4x HM6116P-3 RAM (socketed)
* 1x NEC D8253C-2 programmable timer IC (socketed)
* 2x NEC D8255AC-5 programmable peripheral IC
** towards connector leading to daughterboard 73.200-4045.1/02L / 73.410-4044.2/00
** towards connector X5
* various logic ICs (SN74LS245N, SN74LS02N, SN74LS393N, SN74LS04N, SN74LS138, TC40H032P, TC40HC002P
* Panasonic Lithium Battery BR-2/3A 3V
h4. Connectors (labels added by myself)
|_.Designation|_.Pinout|_.Connects to|
|X1|1x4|Power supply|
|X2|1x3|Power supply|
|X3|1x13|Floppy Controller|
|X4|1x2|Pushbutton on rear panel near DB-15 X.21 connector|
|X5|1x16|Display (X22)|
|X18|2x10|Kayboard (X20) + LED/Pusbutton board (X19)|
h3. Left daughterboard (67.650-3242-2)
{{thumbnail(olympia_disque_left_dboard_bot.jpg,size=500)}}
This board seems to be in charge of driving the electromechanics (daisywheel, paper feed, carriage, ...)
* 1x Mostek MK3870/42 MCU (socketed)
* 1x TMS2516JL-45 16k EPROM 2048x8 (socketed) attachment:TMS3516-45JL.pdf
* 2x 74LS259PC
* 1x 74LS373PC
* 1x ULN2003AN
* 1x LM339N
* 2x SN7404N
* 1x T74LS00BI
* 16x TIP112
* 2x TIP125
* 1x TIP127
h4. Connectors (labels added by myself)
|_.Designation|_.Pinout|_.Connects to|
|X6|1x3||
|X7|1x9|Carriage belt drive step motor|
|X8|1x16|Paper feed step motor|
|X12|2z19|daisy-wheel/carriage|
h3. Right daughterboard (73.200-4045.1/02L / 73.410-4044.2/00)
{{thumbnail(olympia_disque_right_dboard_top.jpg,size=500)}}
{{thumbnail(olympia_disque_right_dboard_bot.jpg,size=500)}}
* 4x NEC D2732D 32k (4096 x 8) EPROM (socketed) attachment:D2732D.pdf
* 1x SN74LS373N
* 1x 8-way dip switch (all on in my unit)
* 1x unknown DIL28 IC (label on top turns marking unreadable)
h3. Display board (73.310-4029.1/05 / 73.410-4028.2/02)
{{thumbnail(olympia_disque_display_top.jpg,size=500)}}
{{thumbnail(olympia_disque_display_bot.jpg,size=500)}}
* 1x single-row 40 character alphanumeric VFD display tube
* 1x Toshiba TMP8085AP CPU (socketed)
* 1x NEC D2732D 32k (4096 x 8) EPROM (socketed) attachment:D2732D.pdf
* 1x RCA CDM6116AE2 RAM
* 1x unknown DIL40 IC (label on top turns marking unreadable)
* 10x UCN4810A VFD display driver
* 1x SN74LS373
* 1x TC40H000P
* 1x 74LS00
h3. Keyboard (73.410-3001-2/00)
{{thumbnail(olympia_disque_keyboard_top.jpg,size=500)}}
{{thumbnail(olympia_disque_keyboard_bot.jpg,size=500)}}
* 1x DM74LS154N
* 76x diode (for key matrix)
* 77x key switch (click)
* 1x 2x10 2.54mm header (bus cable connecting keyboard)
h3. Button and LED panel (73.410-4012.2/02)
* 1x MM5451N
* 8x Diode
* 28x LED 3mm green
* 7x pushbutton
* 1x 2x10 2.54mm header (bus cable connecting keyboard)
h3. Floppy
The floppy drive is a proprietary Olympia Mini-Disk (2" media cartridges with 8kBytes of storage).
{{thumbnail(olympia_disque_floppy_exterior.jpg, size=500)}}
{{thumbnail(olympia_disque_floppy_controller_top.jpg, size=500)}}
{{thumbnail(olympia_disque_floppy_controller_and_drive.jpg, size=500)}}
As you can see in the picture, the plastic part holding the drive motor has cracked and the motor has fallen out.
h3. IKBS board (63.400-6101.1 / ANT 66.3820.600.00-A001 SA-Ausg.B)
This is the internal extensions board turning the daisywheel typewriter into a Teletex device.
The board is the only one in the machine having shield covers, on both top and bottom side.
{{thumbnail(olympia_disque_ikbs_top_shield.jpg, size=500)}}
{{thumbnail(olympia_disque_ikbs_bot_shield.jpg, size=500)}}
The label may indicate it was actually built by ANT and not by Olympia?
{{thumbnail(olympia_disque_ikbs_label.jpg, size=500)}}
IF the shields are removed, the PCBA looks like this:
{{thumbnail(olympia_disque_ikbs_top.jpg, size=500)}}
{{thumbnail(olympia_disque_ikbs_bot.jpg, size=500)}}
* 1x SAB 8085 A-C CPU (socketed)
* 6x MBM2764-30 64k (8192 x 8) EPROM (IC1..IC6)
* 10x Toshiba TC5516AP RAM (socketed, 2x DIP24, 8x DIP28)
* 2x Intel D8251A UART
* 1x Intel D8255A-5
* 1x Intel D8273 HDLC/SDLC controler)
* various logic ICs (74HC00, 74LS03, 74LS00, 7400, 74LS04, 74LS02, 74LS74AN, 74LS32N, 74LS138N, 74LS374N, ...)
* 2x UA637ARC
* 1x 9638RC
* 1x Varta FL3/60DK 063 battery
h4. Connectors
|_.Designation|_.Pinout|_.Connects to|
|SV1|1x4|Power supply|
|SV2|1x14|SUB-D 15 (X.21 Interface)|
|SV3|1x3|Wires soldered to right daughterboard: GND, IS10, IS9). Maybe Chipselect?|
|SV4|1x4|3x Teletex LED panel (X23)|
h2. Software
The dump of the contents of all EPROMS can be found at attachment:OlympiqDisque.zip