Betadisk 128C

ZX Spectrum 48/+/128/szürke +2/+2A/+2B/+3 kérdések: hardver, szoftver
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Bali
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Csatlakozott: 2012.01.06. 13:34
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Betadisk 128C

Hozzászólás Szerző: Bali » 2018.11.05. 01:05

Íme egy újdonság a floppy kedvelőinek.
BetaDisk_128C_floppy_if_9.jpg
BetaDisk_128C_floppy_if_7.jpg
INTRODUCTION:
Beta Disk 128C is a controller for 1 to 4 floppy disk drives for ZX Spectrum and compatible
computers. It comes from the original interface of the same name from British company named Technology
Research Ltd, with which it is fully compatible. The design is virtually unchanged from the original wiring,
with just a few changes, the description of which will go further. This ensures compatibility with the original
interface.
"128" in the interface name indicates that it is a version of the ZX Spectrum operating with both 48KB and
128KB RAM. „C“ indicates Czech clone :-), or controller producer CSS Electronics, as you like ;-)

PARAMETERS:
- Optional to connect 1 to 4 floppy drives 3.5" or 5.25"
- Fully compatible with the ZX Spectrum 48KB, 128KB „toast rack“ and 128K +2 Amstrad gray box. It
is also compatible with other ZX Spectrum clones with a standard system connector and ROM
compatible with ZX Spectrum 48KB or 128KB, for example Didaktik M. Didaktik Gama can be
connected after additional fixing, see next description. Interface is incompatible with the ZX
Spectrum +2A, +2B and +3, these have non-standard signals ROMCS (2x) on the edge
connector and incompatible ROM.
- The device is realized on two printed circuit boards horizontally connected by connectors
- Fully through bus on the bottom board, drivers for all signals for the controller and memory on the
top board
- Used original FDC1793 floppy disk controller or analog
- Integrated voltage converter from +5V to +12V for controller 1793
- Possibility to use 16KB EPROM for TR-DOS system (as original), or 32KB EPROM for two different
versions of the system TR-DOS, system selection by jumper/external switch
- LED power-on indication (green LED) and TR-DOS system activation (red LED)
- The bottom board (buses and drivers) are powered directly from the computer, top board (TR-DOS
and floppy controller) is powered by external source 7,5-9V/300mA max. via the rounded DC
power source connector 3,5/1,4mm (positive pole center)

COMPATIBILITY:
Because the schematic is largely taken from the original interface, is directly compatible with these
computers without any further modifications:
- ZX Spectrum 48KB
- ZX Spectrum 128KB „toast rack“ with radiator to the right
- ZX Spectrum 128KB +2 Amstrad gray box
- ZX Spectrum +2A, +2B, +3 NOT SUPPORTED !!!
- Didaktik M
- Other clone with standard system bus connector and compatible Sinclair Basic ROM

Compatibility depends on whether your computer is equipped with a system connector with a
standard distribution of the appropriate signals, which the Beta Disk 128C interface uses.
-= Bali =-
(c) 1983-2017 Evil-Soft

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Bali
Site Admin
Hozzászólások: 2044
Csatlakozott: 2012.01.06. 13:34
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Re: Betadisk 128C

Hozzászólás Szerző: Bali » 2018.11.05. 01:11

Egy kis dokumentáció:
Betadisk 128C v1.4,1,5 rev.2 ENG.pdf
(12.69 MiB) Letöltve 8 alkalommal.
-= Bali =-
(c) 1983-2017 Evil-Soft

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BetelGeuse
Speccyalista
Hozzászólások: 51
Csatlakozott: 2012.01.09. 16:42

Re: Betadisk 128C

Hozzászólás Szerző: BetelGeuse » 2018.11.05. 04:41

Gyönyörű, „minőségi” munka! A PDF és a technika egyaránt.
És idei, 2018-as...

A Speccy élt már, él most, és élni fog!:D
Ave: BetelGeuse

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Zozosoft
Speccyalista
Hozzászólások: 735
Csatlakozott: 2012.01.06. 14:03
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Re: Betadisk 128C

Hozzászólás Szerző: Zozosoft » 2018.11.12. 16:11

Szép!

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