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gSPSegment [macro]
Sets the segment register and the base address.
Syntax
#include <ultra64.h> /* gbi.h */
gSPSegment(Gfx *gdl, s32 seg, s32 base)
gsSPSegment(s32 seg, s32 base)
Arguments
- gdl is the pointer to the graphics display list.
- seg is the segment ID (0-15)
- base is the base physical address
Explanation
Sets the base physical address of the segment. All pointers in the display list in the Reality Co-Processor (RCP) are segment addresses composed of a segment base and offset address. The actual addresses are calculated by the Reality Signal Processor (RSP) using the following translation:
Physical address = Base address [Segment ID] + Offset
For details, see Section 10.2, "Mixing CPU and SP Data," and Section 11.1.2, "Segmented Memory and the RSP Memory Map" in the N64 Online Programming Manual.
See Also
osVirtualToPhysical
Revision History
2/1/1999 Completely rewritten
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Nintendo® Confidential Warning: all information in this document is confidential and covered by a non-disclosure agreement. You are responsible for keeping this information confidential and protected. Nintendo will vigorously enforce this responsibility. Copyright © 1998-1999 Nintendo of America Inc. All rights reserved Nintendo and N64 are registered trademarks of Nintendo Last updated March 1999 |