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documentations:expansions:ram [2014/03/23 16:25] – created pulkomandy | documentations:expansions:ram [2015/02/28 18:08] (current) – external edit 127.0.0.1 | ||
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===== History ===== | ===== History ===== | ||
- | This expansion was developped | + | This expansion was developed |
* The RAM expansion plugs in the cartridge port (leaving the expansion port free for the Nanoréseau controller), | * The RAM expansion plugs in the cartridge port (leaving the expansion port free for the Nanoréseau controller), | ||
* It can be write protected, | * It can be write protected, | ||
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The RAM is mapped at addresses B000-EFFF, just like a regular cartridge. | The RAM is mapped at addresses B000-EFFF, just like a regular cartridge. | ||
- | The RAM expansion is configured using a single register at attress | + | The RAM expansion is configured using a single register at address |
* bits 0-1: RAM page number | * bits 0-1: RAM page number | ||
* bit 2: enable RAM expansion (when disabled, the BASIC is mapped) | * bit 2: enable RAM expansion (when disabled, the BASIC is mapped) |