Olympia Disque with IKBS¶

• Table of contents
• Olympia Disque with IKBS
  • Hardware
    • Mainboard
      • Connectors (labels added by myself)
    • Left daughterboard (67.650-3242-2)
      • Connectors (labels added by myself)
    • Right daughterboard (73.200-4045.1/02L / 73.410-4044.2/00)
    • Display board (73.310-4029.1/05 / 73.410-4028.2/02)
    • Keyboard (73.410-3001-2/00)
    • Button and LED panel (73.410-4012.2/02)
    • Floppy
    • IKBS board (63.400-6101.1 / ANT 66.3820.600.00-A001 SA-Ausg.B)
      • Connectors
  • Software
  • Manuals

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.

Hardware¶

Mainboard¶

The Mainboard comes assembled in a stack with two daughter boards:

The actual mainboard is the bottom board in the stack:

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

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)

Left daughterboard (67.650-3242-2)¶

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) TMS3516-45JL.pdf
• 2x 74LS259PC
• 1x 74LS373PC
• 1x ULN2003AN
• 1x LM339N
• 2x SN7404N
• 1x T74LS00BI
• 16x TIP112
• 2x TIP125
• 1x TIP127

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

Right daughterboard (73.200-4045.1/02L / 73.410-4044.2/00)¶

• 4x NEC D2732D 32k (4096 x 8) EPROM (socketed) D2732D.pdf
• 1x SN74LS373N
• 1x 8-way dip switch (all on in my unit)
• 1x unknown DIL28 IC (label on top turns marking unreadable)

Display board (73.310-4029.1/05 / 73.410-4028.2/02)¶

• 1x single-row 40 character alphanumeric VFD display tube
• 1x Toshiba TMP8085AP CPU (socketed)
• 1x NEC D2732D 32k (4096 x 8) EPROM (socketed) 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

Keyboard (73.410-3001-2/00)¶

• 1x DM74LS154N
• 76x diode (for key matrix)
• 77x key switch (click)
• 1x 2x10 2.54mm header (bus cable connecting keyboard)

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)

Floppy¶

The floppy drive is a proprietary Olympia Mini-Disk (2" media cartridges with 8kBytes of storage).

As you can see in the picture, the plastic part holding the drive motor has cracked and the motor has fallen out.

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.

The label may indicate it was actually built by ANT and not by Olympia?

IF the shields are removed, the PCBA looks like this:

• 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

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)

Software¶

The dump of the contents of all EPROMS can be found at OlympiqDisque.zip

Manuals¶

• olympia_disque-bedienungsanleitung.pdf
• olympia_disque_teletex_mit_kbs101_und_ikbs-bedienungsanleitung.pdf