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20240110-2

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lampmerchant 2024-01-10 07:14:48 -07:00
parent bb3aa7f484
commit a2aa3f6aca
1 changed files with 14 additions and 12 deletions
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26
firmware/one-chip.asm
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@ -1710,7 +1710,20 @@ InFErr
clrf TXREG ; "
movlw 0xFE ;Transmit 0xFE, which signifies 'Frame Error'
movwf TXREG ; "
bra FinishUp
;fall through
OutLostClock
EmpLostClock
FinishUp
movlb 0 ;If the frame regs changed, deactivate Timer2
btfss FLAGS,LR_FRM ; and clear its interrupt flag so anything that
bra Finish2 ; was waiting for it knows that a frame was
bcf T2CON,TMR2ON ; received while waiting
bcf PIR1,TMR2IF ; "
Finish2 movf FSR0L,W ;Store the changed UART receiver push point
movlb 31 ; back in its shadow register so it stays the
movwf FSR0L_SHAD ; same when we return from interrupt
retfie
InLostClock
movlb 0 ;Wait until the UART transmitter is ready for
@ -1726,17 +1739,6 @@ InLostClock
movwf TXREG ; "
bra FinishUp
OutLostClock
EmpLostClock
FinishUp
movlb 0 ;Deactivate Timer2 and clear its interrupt flag
bcf T2CON,TMR2ON ; so anything that was waiting for it knows
bcf PIR1,TMR2IF ; that a receive event happened while waiting
movf FSR0L,W ;Store the changed UART receiver push point
movlb 31 ; back in its shadow register so it stays the
movwf FSR0L_SHAD ; same when we return from interrupt
retfie
;;; LocalTalk Receiver State Machines ;;;