Macintosh-Tools/dingusppc
1
0
Fork 0
mirror of https://github.com/dingusdev/dingusppc.git synced 2024-06-06 01:29:29 +00:00
Code Issues Projects Releases Wiki Activity

escc: Read ch_a is missing register pointer reset.

Browse Source
This commit is contained in:
joevt 2024-04-26 18:28:40 -07:00 committed by dingusdev
parent 19f06fb3a2
commit cf9811d03a
2 changed files with 18 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
devices/serial/escc.cpp
View File

@ -80,20 +80,10 @@ uint8_t EsccController::read(uint8_t reg_offset)
switch(reg_offset) {
case EsccReg::Port_B_Cmd:
if (this->reg_ptr == RR2) {
// TODO: implement interrupt vector modifications
value = this->int_vec;
} else {
value = this->ch_b->read_reg(this->reg_ptr);
}
this->reg_ptr = RR0; // or WR0
value = this->read_internal(this->ch_b.get());
break;
case EsccReg::Port_A_Cmd:
if (this->reg_ptr == RR2) {
value = this->int_vec;
} else {
value = this->ch_a->read_reg(this->reg_ptr);
}
value = this->read_internal(this->ch_a.get());
break;
case EsccReg::Port_B_Data:
value = this->ch_b->receive_byte();
@ -141,6 +131,21 @@ void EsccController::write(uint8_t reg_offset, uint8_t value)
}
}
uint8_t EsccController::read_internal(EsccChannel *ch)
{
uint8_t value;
switch (this->reg_ptr) {
case RR2:
// TODO: implement interrupt vector modifications
value = this->int_vec;
break;
default:
value = ch->read_reg(this->reg_ptr);
}
this->reg_ptr = RR0; // or WR0
return value;
}
void EsccController::write_internal(EsccChannel *ch, uint8_t value)
{
switch (this->reg_ptr) {

1
devices/serial/escc.h
View File

@ -171,6 +171,7 @@ public:
private:
void reset();
void write_internal(EsccChannel* ch, uint8_t value);
uint8_t read_internal(EsccChannel* ch);
std::unique_ptr<EsccChannel> ch_a;
std::unique_ptr<EsccChannel> ch_b;