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Fixed: I had the meaning of the C3 ROM switch inverted here.

Thomas Harte 2018-07-30 15:39:08 -04:00
parent c69f338256
commit 68d45371b3
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Apple-IIe-Memory-Paging.md

@ -24,7 +24,7 @@ Never mapped to RAM. Always contains the internal and card IO.
Contains ROM if `RDCXROM` is set. Otherwise is unmapped, allowing cards to respond. Contains ROM if `RDCXROM` is set. Otherwise is unmapped, allowing cards to respond.
# C300–C400 # C300–C400
Contains ROM if either of `RDCXROM` or `RDC3ROM` is set. Otherwise is unmapped, allowing cards to respond. Contains ROM if `RDCXROM` is set or `INTC3ROM` is reset. Otherwise is unmapped, allowing card 3 to respond.
# D000–E000 # D000–E000
Reading: contains ROM if the language card `read` flip flop is *disabled*. Contains base RAM if the flip flop is enabled and `RAMRD` is reset. Otherwise contains auxiliary RAM. Reading: contains ROM if the language card `read` flip flop is *disabled*. Contains base RAM if the flip flop is enabled and `RAMRD` is reset. Otherwise contains auxiliary RAM.