Difference between revisions of "Dobbertin EPROM 224"
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This rombox allows individual settings for each rom(via a jumper block). This way the rombox has a maximum capacity of 224Kb (7*32Kb). Also individual roms can be turned on/off by setting a jumper. | This rombox allows individual settings for each rom(via a jumper block). This way the rombox has a maximum capacity of 224Kb (7*32Kb). Also individual roms can be turned on/off by setting a jumper. | ||
| + | |||
| + | Testing indicates normal decoding is done of the ROM select I/O port: e.g. Bit 13=0, all others are ignored. | ||
| + | In addition, ROM select IDs do not repeat, so that a ROM in slot 1, only exists in this slot and no others. | ||
== Promo == | == Promo == | ||
Latest revision as of 06:27, 21 December 2012
EPROM-Karte 224 is a rombox, manufactured by Dobbertin, capacity is 7x32K (=224K) max.
Technical Specifications
Allows up to 7 roms of type 27128 or type 27256 to be connected to the CPC.
This rombox allows individual settings for each rom(via a jumper block). This way the rombox has a maximum capacity of 224Kb (7*32Kb). Also individual roms can be turned on/off by setting a jumper.
Testing indicates normal decoding is done of the ROM select I/O port: e.g. Bit 13=0, all others are ignored. In addition, ROM select IDs do not repeat, so that a ROM in slot 1, only exists in this slot and no others.
Promo
- Dobbertin EPROM 224 Promo
Frontpage
Contents
Pictures
- Dobbertin EPROM 224 Pictures
Dobbertin EPROM 224 Box (outside)
Dobbertin EPROM 224 PCB (bottom)
Dobbertin EPROM 224 Box (inside)
Dobbertin EPROM 224 Box (instructions)
Unit Top
Unit Bottom
PCB Top
PCB Bottom
Other Dobbertin rombords
There existed other romboards manufactured by Dobbertin Little is know of them!
