Differences
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mg_notes:general:mem_map [2017/10/12 14:13] M.G. created |
mg_notes:general:mem_map [2017/10/12 14:19] M.G. [Aux RAM / IIgs Bank 1] |
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| ===== Main RAM / IIgs Bank 0 ===== | ===== Main RAM / IIgs Bank 0 ===== | ||
| - | The IIgs supports shadowing of the Bank 0 screen buffers to bank $E0 Mega II "Slow RAM". | + | The IIgs screen buffers listed are not where the hardware actually draws them from. The real screen buffers are in Mega II "Slow RAM" bank $E0 and $E1. The IIgs hardware supports shadowing of the Bank 0 screen buffers to bank $E0. |
| ^ Address(es) ^ Use ^ | ^ Address(es) ^ Use ^ | ||
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| | BE00--BEFF | BASIC.SYSTEM global page | | | BE00--BEFF | BASIC.SYSTEM global page | | ||
| | BF00--BFFF | ProDOS 8 global page | | | BF00--BFFF | ProDOS 8 global page | | ||
| + | | C000--CFFF | I/O space \\ On IIgs this is mapped to Mega II | | ||
| | C000--C0FF | [[mg_notes:general:io_page|I/O Page]] | | | C000--C0FF | [[mg_notes:general:io_page|I/O Page]] | | ||
| | C080--C0FF | Slots (or ports) 0--7 Device Select $C080+$n0--$C08F+$n0 (usually H/W) | | | C080--C0FF | Slots (or ports) 0--7 Device Select $C080+$n0--$C08F+$n0 (usually H/W) | | ||
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| ===== Aux RAM / IIgs Bank 1 ===== | ===== Aux RAM / IIgs Bank 1 ===== | ||
| - | The IIgs supports shadowing of the Bank 1 screen buffers to bank $E1 Mega II "Slow RAM". | + | The IIgs screen buffers listed are not where the hardware actually draws them from. The real screen buffers are in Mega II "Slow RAM" bank $E0 and $E1. The IIgs hardware supports shadowing of the Bank 1 screen buffers to bank $E1. |
| | 0000--00FF | Aux Zero Page | | | 0000--00FF | Aux Zero Page | | ||