6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-23 20:29:42 +00:00
Code Issues Projects Releases Wiki Activity

Enables an assumption of partial address decoding at the ACIA and PSG.

Browse Source
This commit is contained in:
Thomas Harte 2020-01-04 17:27:55 -05:00
parent 42a9585321
commit 3ab4fb8c79
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Machines/Atari/ST/AtariST.cpp
View File

@ -292,7 +292,7 @@ class ConcreteMachine:
cycle.set_value8_high(ay_.get_data_output());
ay_.set_control_lines(GI::AY38910::ControlLines(0));
} else {
if((address >> 1) == 0x7fc400) {
if(!(address&2)) {
ay_.set_control_lines(GI::AY38910::BC1);
} else {
ay_.set_control_lines(GI::AY38910::ControlLines(GI::AY38910::BC2 | GI::AY38910::BDIR));
@ -349,7 +349,7 @@ class ConcreteMachine:
mc68000_.set_is_peripheral_address(!cycle.data_select_active());
if(!cycle.data_select_active()) return delay;
const auto acia_ = ((address >> 1) < 0x7ffe02) ? &keyboard_acia_ : &midi_acia_;
const auto acia_ = (address & 4) ? &midi_acia_ : &keyboard_acia_;
if(cycle.operation & Microcycle::Read) {
cycle.set_value8_high((*acia_)->read(int(address >> 1)));
} else {