Showing changes from revision #6 to #7:
Added | Removed | Changed
Entry | |
---|---|
R0 | Source mode / sprite area |
R1 | Source palette pointer / sprite |
R2 | Destination mode, or -1 for current mode |
R3 | Destination palette pointer, or |
-1 for current palette, or | |
0 for default for the mode | |
R4 | Pointer to buffer, or 0 to return length |
R5 | Select Table Flags (only used if R0 & R1 indicate a sprite) |
R6 | Pointer to transfer workspace (R12) (if R5 valid and bit 2 of R5 is set) |
R7 | Pointer to |
Exit | |
---|---|
R0 | Preserved |
R1 | Preserved |
R2 | Preserved |
R3 | Preserved |
R4 | Required size of buffer (if R4=0 on entry), or preserved |
R5 | Preserved |
R6 | Preserved |
R7 | Preserved |
The purpose of this call is to set up a translation table in a buffer that is used by scaled sprite plotting.
Unlike ColourTrans_GenerateTable this SWI call only uses R5-R7 if R0 & R1 describe a sprite. For mode numbers, mode descriptors, sprite mode words, and the current mode (-1), R5-R7 are ignored and the flags word is treated as 0.
R6 and R7 are only used if R5 is used and bit 2 of R5 is set.