Difference between revisions of "System RAM"
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<table border> | <table border> | ||
<tr><td>$0200-$02EF</td><td>BACKground TABle (BACKTAB)</td></tr> | <tr><td>$0200-$02EF</td><td>BACKground TABle (BACKTAB)</td></tr> | ||
| − | <tr><td>$02F0-$02F0</td><td>Used by the Executive ROM | + | <tr><td>$02F0-$02F0</td><td>Used by the [[Executive ROM|EXEC]] to indicate the currently active cartridge header</td></tr> |
| − | <tr><td>$02F1-$0318</td><td>CP1610 Stack</td></tr> | + | <tr><td>$02F1-$0318</td><td>CP1610 Stack. (Upper bound actually determined by the game software.)</td></tr> |
<tr><td>$0319-$031C</td><td>Used by the Executive ROM for unknown purposes</td></tr> | <tr><td>$0319-$031C</td><td>Used by the Executive ROM for unknown purposes</td></tr> | ||
<tr><td>$031D-$035C</td><td>Used by the Executive ROM as a MOB RAM data base</td></tr> | <tr><td>$031D-$035C</td><td>Used by the Executive ROM as a MOB RAM data base</td></tr> | ||
<tr><td>$035D-$035F</td><td>Used by the Executive ROM for unknown purposes</td></tr> | <tr><td>$035D-$035F</td><td>Used by the Executive ROM for unknown purposes</td></tr> | ||
</table> | </table> | ||
Revision as of 01:52, 11 January 2005
The System RAM unit is the only 16-bit RAM available in the Intellivision, and it is mapped into the Intellivision memory map from $0200-$035F. Note that all of the System RAM is used by the STIC and the Executive ROM and is unavailable for general use by the program.
| $0200-$02EF | BACKground TABle (BACKTAB) |
| $02F0-$02F0 | Used by the EXEC to indicate the currently active cartridge header |
| $02F1-$0318 | CP1610 Stack. (Upper bound actually determined by the game software.) |
| $0319-$031C | Used by the Executive ROM for unknown purposes |
| $031D-$035C | Used by the Executive ROM as a MOB RAM data base |
| $035D-$035F | Used by the Executive ROM for unknown purposes |
