Dobbertin EPROM 224: Difference between revisions
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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 == | ||
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Image:Dobbertin224_1.jpg|Dobbertin EPROM 224 Box (outside) | Image:Dobbertin224_1.jpg|Dobbertin EPROM 224 Box (outside) | ||
Image:Dobbertin224_2.jpg|Dobbertin EPROM 224 PCB (bottom) | Image:Dobbertin224_2.jpg|Dobbertin EPROM 224 PCB (bottom) | ||
Image: | Image:Dobbertin224_4.jpg|Dobbertin EPROM 224 Box (inside) | ||
Image: | Image:Dobbertin224_3.jpg|Dobbertin EPROM 224 Box (instructions) | ||
Image:Dobbertin_EPROM_224_Top.jpg|Unit Top | |||
Image:Dobbertin_EPROM_224_Bottom.jpg|Unit Bottom | |||
Image:Dobbertin_EPROM_224_PCB_Top.jpg|PCB Top | |||
Image:Dobbertin_EPROM_224_PCB_Bottom.jpg|PCB Bottom | |||
</gallery> | </gallery> | ||
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Little is know of them! | Little is know of them! | ||
[[Category: | [[Category:Expansion ROM]] [[Category:Peripherals]] [[Category:Memory expansions]] [[Category:DATA Storage]] | ||
Latest revision as of 10:27, 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
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Frontpage
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Contents
Pictures
- Dobbertin EPROM 224 Pictures
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Dobbertin EPROM 224 Box (outside)
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Dobbertin EPROM 224 PCB (bottom)
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Dobbertin EPROM 224 Box (inside)
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Dobbertin EPROM 224 Box (instructions)
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Unit Top
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Unit Bottom
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PCB Top
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PCB Bottom
Other Dobbertin rombords
There existed other romboards manufactured by Dobbertin Little is know of them!