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escc: One return path for read.

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joevt 2024-04-20 03:52:04 -07:00 committed by dingusdev
parent 159fe8d48e
commit da203b69c5
1 changed files with 20 additions and 9 deletions
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29
devices/serial/escc.cpp
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@ -73,36 +73,47 @@ void EsccController::reset()
uint8_t EsccController::read(uint8_t reg_offset)
{
uint8_t result = 0;
uint8_t value;
switch(reg_offset) {
case EsccReg::Port_B_Cmd:
LOG_F(9, "ESCC: reading Port B register RR%d", this->reg_ptr);
if (this->reg_ptr == 2) {
// TODO: implement interrupt vector modifications
result = this->int_vec;
value = this->int_vec;
} else {
result = this->ch_b->read_reg(this->reg_ptr);
value = this->ch_b->read_reg(this->reg_ptr);
}
this->reg_ptr = 0;
break;
case EsccReg::Port_A_Cmd:
LOG_F(9, "ESCC: reading Port A register RR%d", this->reg_ptr);
if (this->reg_ptr == 2) {
return this->int_vec;
value = this->int_vec;
} else {
return this->ch_a->read_reg(this->reg_ptr);
value = this->ch_a->read_reg(this->reg_ptr);
}
break;
case EsccReg::Port_B_Data:
return this->ch_b->receive_byte();
value = this->ch_b->receive_byte();
break;
case EsccReg::Port_A_Data:
return this->ch_a->receive_byte();
value = this->ch_a->receive_byte();
break;
case EsccReg::Enh_Reg_B:
LOG_F(WARNING, "ESCC_B: reading from unimplemented register 0x%x", reg_offset);
value = 0;
break;
case EsccReg::Enh_Reg_A:
LOG_F(WARNING, "ESCC_A: reading from unimplemented register 0x%x", reg_offset);
value = 0;
break;
default:
LOG_F(9, "ESCC: reading from unimplemented register 0x%x", reg_offset);
LOG_F(WARNING, "ESCC: reading from unimplemented register 0x%x", reg_offset);
value = 0;
}
return result;
return value;
}
void EsccController::write(uint8_t reg_offset, uint8_t value)