Re: HP50G Memory Message #3 Posted by Tim Wessman on 13 Aug 2007, 12:38 p.m., in response to message #2 by hugh steers
Yes, it is some saturn architectural weirdness. Saturn only has 5 nibble addressing, so it can only address 512k at once. Main RAM (HOME) is 256k, but part is used for stack, hidden directory, etc.
In HPGCC you are seeing main RAM, hidden ram (~90K - the leftover from the 128k bankj reserved for the ARM OS) and IRAM (port 1) turned into one contiguous block. It is a 512k RAM chip, but part is reserved for the ARM emulator so you never have the full 512.
TW
Edited: 13 Aug 2007, 12:43 p.m.
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