Difference between revisions of "Reservedregisters"
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(Clarify which registers are reserved and which are good practice.) |
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==Reserved Registers== | ==Reserved Registers== | ||
| − | + | This page is for the main reserved registers. These are registers that always have a special purpose. | |
| − | R74 | + | |
| − | R75 | + | For the Barebones quests list of reserved registers see |
| − | R76 | + | |
| − | R77 | + | [[Barebones registers lists]]. |
| − | R78 | + | |
| − | + | R74 = Used to hide show quest board item 0. (Set true. Clear false.) | |
| − | R253 | + | R75 = Used to hide show quest board item 1. (Set true. Clear false.) |
| − | R255 | + | R76 = Used to hide show quest board item 2. (Set true. Clear false.) |
| + | R77 = Used to hide show quest board item 3. (Set true. Clear false.) | ||
| + | R78 = Used to hide show quest board item 4. (Set true. Clear false.) | ||
| + | R79 = Used to hide show quest board item 5. (Set true. Clear false.) | ||
| + | R253 = Is the quest failure flag. (If set quest failed.) | ||
| + | R255 = Is the quest success flag. (If set quest cleared.) | ||
| + | |||
| + | There are other registers that Sega typically used for storing special values and it may be a good practice to follow the convention. However, none of these are required to be used in this manner. | ||
| + | |||
| + | R0 = In older Sega quests, often indicates whether the quest has begun (finished quest giver dialogue). In later Sega quests, typically used as a function return value because it's not affected by va_start/va_end. | ||
| + | R250 = Local client's slot number. | ||
| + | R252 = The difficulty level. | ||
| + | R254 = Quest completed and talking to the quest giver will cause the dialogue that sets R255. | ||
Latest revision as of 23:52, 27 December 2022
Reserved Registers
This page is for the main reserved registers. These are registers that always have a special purpose.
For the Barebones quests list of reserved registers see
R74 = Used to hide show quest board item 0. (Set true. Clear false.) R75 = Used to hide show quest board item 1. (Set true. Clear false.) R76 = Used to hide show quest board item 2. (Set true. Clear false.) R77 = Used to hide show quest board item 3. (Set true. Clear false.) R78 = Used to hide show quest board item 4. (Set true. Clear false.) R79 = Used to hide show quest board item 5. (Set true. Clear false.) R253 = Is the quest failure flag. (If set quest failed.) R255 = Is the quest success flag. (If set quest cleared.)
There are other registers that Sega typically used for storing special values and it may be a good practice to follow the convention. However, none of these are required to be used in this manner.
R0 = In older Sega quests, often indicates whether the quest has begun (finished quest giver dialogue). In later Sega quests, typically used as a function return value because it's not affected by va_start/va_end. R250 = Local client's slot number. R252 = The difficulty level. R254 = Quest completed and talking to the quest giver will cause the dialogue that sets R255.
