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escc: Update RR0 if no character is available.

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The RR0_RX_CHARACTER_AVAILABLE bit is cleared after the character is read in receive_byte, but clear it anyway in read_reg when there's no character available just in case a character that was available somehow becomes unavailable.
This commit is contained in:
joevt 2024-04-26 20:33:27 -07:00 committed by dingusdev
parent a18658fc16
commit 226c097b81
1 changed files with 3 additions and 1 deletions
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4
devices/serial/escc.cpp
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@ -331,7 +331,9 @@ uint8_t EsccChannel::read_reg(int reg_num)
switch (reg_num) {
case RR0:
if (this->chario->rcv_char_available()) {
this->read_regs[RR0] |= RR0_RX_CHARACTER_AVAILABLE;
return this->read_regs[RR0] |= RR0_RX_CHARACTER_AVAILABLE;
} else {
return this->read_regs[RR0] &= ~RR0_RX_CHARACTER_AVAILABLE;
}
break;
case RR8: