Difference between revisions of "The Dragon's Claw"
From The Dragon Archive
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Revision as of 23:01, 27 May 2013
The Dragon's Claw is an extension cartridge for the Dragon by Lucidata.
It features two parallel I/O ports. One with the BBC User Port pinout, and the second one with a Centronics Printer Port pinout.
The cartridge also allows connecting another cartridge like a disk controller, and up to 4 Dragon Claws.
The heart of the Dragon's Claw is the Rockwell 6522 VIA (Versatile Interface Adaptor) chip.
Pictures
- Dragon's Claw
Box
Casing Bottom
PCB Top
PCB Bottom
IC Parts Lists
Mk1 Board IC list (with Datasheets)
| Part Number | Description | Datasheet |
| 6522 | Versatile Interface Adaptor | (pdf) |
| 74LS30N | 8-Input positive-NAND gates | (pdf) |
| 74LS138N | 1-of-8 Decoder/Multiplexer | (pdf) |
