Difference between revisions of "NEO mapper/Extension"
From MSX Game Library
(Created page with "NEO Mapper Extension {{WIP}} {| class="wikitable" |- !colspan="8"| Higher byte | !colspan="8"| Lower byte |- ! 15 || 14 || 13 || 12 || 11 || 10 || 9 || 8 | ! 7 || 6 || 5 ||...") |
|||
| Line 1: | Line 1: | ||
NEO Mapper Extension {{WIP}} | NEO Mapper Extension {{WIP}} | ||
| + | |||
| + | == Mode == | ||
| + | * {{C|00}}: ROM mapper | ||
| + | ** Read: Access to ROM content | ||
| + | ** Write: Select bank's segment | ||
| + | |||
| + | * {{C|01}}: | ||
| + | |||
| + | * {{C|10}}: | ||
| + | ** Read: | ||
| + | ** Write: | ||
| + | |||
| + | * {{C|11}}: | ||
{| class="wikitable" | {| class="wikitable" | ||
| Line 18: | Line 31: | ||
* The 2 higher bits are used to select mode | * The 2 higher bits are used to select mode | ||
| − | |||
* The 14 lower bits to select which segment is visible in each bank, for a maximum of 16384 segments. | * The 14 lower bits to select which segment is visible in each bank, for a maximum of 16384 segments. | ||
Revision as of 14:35, 4 March 2025
NEO Mapper Extension WIP
Mode
- 00: ROM mapper
- Read: Access to ROM content
- Write: Select bank's segment
- 01:
- 10:
- Read:
- Write:
- 11:
| Higher byte | Lower byte | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| Mode | Segment MSB | Segment LSB | ||||||||||||||
- The 2 higher bits are used to select mode
- The 14 lower bits to select which segment is visible in each bank, for a maximum of 16384 segments.