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author Couriersud <couriersud@users.noreply.github.com>2007-12-25 22:21:57 +0000
committer Couriersud <couriersud@users.noreply.github.com>2007-12-25 22:21:57 +0000
commitdd82d11edb75d24fcf6abfec72fbdcbab52a66a3 (patch)
tree83ebb7b034c85b33d0de885efdcc9b2bd70412e8
parent24edb7d555a81318c6e4d6261fe23de63f31609a (diff)
- added some comments relating to Z80 DMA chip (dkong3)
-rw-r--r--src/mame/drivers/dkong.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/dkong.c b/src/mame/drivers/dkong.c
index d54ee01d393..0437a86028b 100644
--- a/src/mame/drivers/dkong.c
+++ b/src/mame/drivers/dkong.c
@@ -738,6 +738,7 @@ static ADDRESS_MAP_START( dkong3_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x6900, 0x6a7f) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size) /* sprite set 1 */
AM_RANGE(0x6a80, 0x6cff) AM_RAM /* 0x6b00: sprite set 2 */
AM_RANGE(0x6d00, 0x6fff) AM_RAM /* ???? */
+ AM_RANGE(0x7000, 0x73ff) AM_RAM /* Actual sprite ram location ... waiting for missing z80 dma */
AM_RANGE(0x7400, 0x77ff) AM_READWRITE(MRA8_RAM, dkong_videoram_w) AM_BASE(&videoram)
AM_RANGE(0x7c00, 0x7c00) AM_READ_PORT("IN0") AM_WRITE(soundlatch_w)
AM_RANGE(0x7c80, 0x7c80) AM_READ_PORT("IN1") AM_WRITE(soundlatch2_w)
@@ -755,7 +756,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( dkong3_io_map, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
- AM_RANGE(0x00, 0x00) AM_WRITE(MWA8_NOP) /* ??? */
+ AM_RANGE(0x00, 0x00) AM_WRITE(MWA8_NOP) /* dma controller */
ADDRESS_MAP_END
static ADDRESS_MAP_START( dkongjr_map, ADDRESS_SPACE_PROGRAM, 8 )