Macintosh-SW/tashtalk
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lampmerchant 2023-11-12 06:17:16 -07:00
parent fd7b098638
commit c7f052f49a
1 changed files with 7 additions and 3 deletions
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firmware/one-chip.asm
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@ -465,8 +465,8 @@ PrepForNextFrame
lslf DEF_HIST,F ; logs to make space for what happens this time
movf GBACKOFF,W ;Copy the global backoff mask into the local
movwf LBACKOFF ; backoff mask
movlw 33 ;Set attempts counter to 32 (plus one since we
movwf ATTEMPTS ; immediately decrement it)
movlw 32 ;Set attempts counter to 32
movwf ATTEMPTS ; "
bra AwaitCommand ;We're set for the next frame, wait for it
;entered with BSR = 2
@ -1352,7 +1352,7 @@ SendPoL DNOP ;32-33
movlw B'00101010' ;33 Get ready to tristate LT pin
tris 5 ;34 Tristate LT pin
bcf LATA,4 ;00 Switch transceiver to receive mode
return ;End transmission
bra SendPoW ;01-02 Go wait for the line to return to idle
SendPoZ nop ;34
bcf LATA,5 ;00 Drive bus to 0
call SendDoUartSvc ;01-02 (03-14) Service the UART receiver
@ -1360,6 +1360,10 @@ SendPoZ nop ;34
movlw B'00101010' ;33 Get ready to tristate LT pin
tris 5 ;34 Tristate LT pin
bcf LATA,4 ;00 Switch transceiver to receive mode
DNOP ;01-02
SendPoW call SendDoUartSvc ;03-04 (05-16) Service the UART receiver while
call SendDoUartSvc ;17-18 (19-30) we wait for the LocalTalk bus
call SendDoUartSvc ;31-32 (33-44) to go high/idle again
return ;End transmission
SendByteStuff