Changes

Aleste Translation PROMs and EPROMs

24 bytes removed, 04:40, 6 February 2010

/* Aleste COLDAT eprom (Gate Array Parameters and Upper ROM Bank) */

== Aleste COLDAT eprom (Gate Array Parameters and Upper ROM Bank) ==

~~'''~~Inputs:~~'''~~

A0..A7 Databus D0..D7

A8 CPU A13

A9 CPU A15

A10 MAPMOD ;affects ONLY the palette bits in COLDAT

~~'''~~Outputs: (enabled only when /IORQ=Low)~~'''~~

D0..D5 XD0..XD5

D6 Not used (not connected)

D7 VRAMACC

~~'''~~Part A (when MAPMOD=0)~~'''~~

COLDAT Addr CPU Addr Content

0000..00FF: 5FFFh ? (filled with incrementing values: 00h..FFh)

0200..02FF: DFFFh Upper ROM Bank

0300..03FF: FFFFh ? (filled with incrementing values: 00h..FFh)

~~'''~~Part B (when MAPMOD=1)~~'''~~

0400..04FF: 5FFFh ? (filled with incrementing values: 00h..FFh)

0500..053F: 7FFFh Gate Array 0 (palette index) (same as MAPMODE=0)

6,388

edits