BLTxPTH/BLTxPTL

Address Name Description DFF048 BLTCPTH Blitter pointer to source C (high 5 bits) DFF04A BLTCPTL Blitter pointer to source C (low 15 bits) DFF04C BLTBPTH Blitter pointer to source B (high 5 bits) DFF04E BLTBPTL Blitter pointer to source B (low 15 bits) DFF050 BLTAPTH Blitter pointer to source A (high 5 bits) DFF052 BLTAPTL Blitter pointer to source A (low 15 bits) DFF054 BLTDPTH Blitter pointer to destination D (high 5 bits) DFF056 BLTDPTL Blitter pointer to destination D (low 15 bits)

Overview

This pair of registers contains the 20 bit address of Blitter source
(x=A,B,C) or dest. (x=D) DMA data. This pointer must be preloaded
with the starting address of the data to be processed by the blitter.
After the Blitter is finished, it will contain the last data address
(plus increment and modulo).

• Hardware