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-rw-r--r--src/mame/video/konamiic.txt9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mame/video/konamiic.txt b/src/mame/video/konamiic.txt
index aca1072e262..622e4d9352f 100644
--- a/src/mame/video/konamiic.txt
+++ b/src/mame/video/konamiic.txt
@@ -211,8 +211,8 @@ tilemaps to form a single 8bpp one.
It manages sprites and 32x32 or 64x32 tilemap (only Double Dribble uses the
64x32 one).
The chip also generates clock and interrupt signals suitable for a 6809.
-It uses 0x2000 bytes of RAM for the tilemaps and sprites, and an additional
-0x100 bytes, maybe for scroll RAM and line buffers. The maximum addressable
+It uses 0x2000 bytes of static RAM for the tilemaps and sprite lists, and two
+64kx4bit DRAMs, presumably as a double frame buffer. The maximum addressable
ROM is 0x20000 bytes (addressed 16 bits at a time). Tile and sprite data both
come from the same ROM space. Double Dribble and Jackal have external circuitry
to extend the limits and use separated addressing spaces for sprites and tiles.
@@ -234,8 +234,9 @@ inputs:
outputs:
- address lines for tilemap RAM (AX0-AX12)
- data lines for tilemap RAM (VO0-VO7)
-- address lines for the small RAM (FA0-FA7)
-- data lines for the small RAM (FD0-FD7)
+- address lines for the DRAMs (FA0-FA7)
+- control lines for the DRAMs (NWR0, NWR1, NRAS, NCAS, NFOE)
+- data lines for the DRAMs (FD0-FD7)
- address lines for the gfx ROMs (R0-R15)
- address lines for the tile lookup PROMs (VCF0-VCF3, VCB0-VCB3)
- address lines for the sprite lookup PROMs (OCB0-OCB3, OCF0-OCF3)