empathicqubit/cc65
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added SER_ prefix. Whitespace cleanup

Browse source
This commit is contained in:
Olli Savia 2018-11-26 22:18:26 +02:00 • committed by Oliver Schmidt
parent 7147e780e6
commit 4304f11549
1 changed files with 30 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

58
libsrc/plus4/ser/plus4-stdser.s
View file

@ -45,15 +45,15 @@
; Jump table
.word INSTALL
.word UNINSTALL
.word OPEN
.word CLOSE
.word GET
.word PUT
.word STATUS
.word IOCTL
.word IRQ
.word SER_INSTALL
.word SER_UNINSTALL
.word SER_OPEN
.word SER_CLOSE
.word SER_GET
.word SER_PUT
.word SER_STATUS
.word SER_IOCTL
.word SER_IRQ
;----------------------------------------------------------------------------
; I/O definitions
@ -130,25 +130,25 @@ ParityTable:
.code
;----------------------------------------------------------------------------
; INSTALL routine. Is called after the driver is loaded into memory. If
; SER_INSTALL routine. Is called after the driver is loaded into memory. If
; possible, check if the hardware is present.
; Must return an SER_ERR_xx code in a/x.
;
; Since we don't have to manage the IRQ vector on the Plus/4, this is actually
; the same as:
;
; UNINSTALL routine. Is called before the driver is removed from memory.
; SER_UNINSTALL routine. Is called before the driver is removed from memory.
; Must return an SER_ERR_xx code in a/x.
;
; and:
;
; CLOSE: Close the port, disable interrupts and flush the buffer. Called
; SER_CLOSE: Close the port, disable interrupts and flush the buffer. Called
; without parameters. Must return an error code in a/x.
;
INSTALL:
UNINSTALL:
CLOSE:
SER_INSTALL:
SER_UNINSTALL:
SER_CLOSE:
; Deactivate DTR and disable 6551 interrupts
@ -165,7 +165,7 @@ CLOSE:
; PARAMS routine. A pointer to a ser_params structure is passed in ptr1.
; Must return an SER_ERR_xx code in a/x.
OPEN:
SER_OPEN:
; Check if the handshake setting is valid
@ -244,12 +244,13 @@ InvBaud:
rts
;----------------------------------------------------------------------------
; GET: Will fetch a character from the receive buffer and store it into the
; SER_GET: Will fetch a character from the receive buffer and store it into the
; variable pointer to by ptr1. If no data is available, SER_ERR_NO_DATA is
; return.
;
GET: ldx SendFreeCnt ; Send data if necessary
SER_GET:
ldx SendFreeCnt ; Send data if necessary
inx ; X == $FF?
beq @L1
lda #$00
@ -288,11 +289,11 @@ GET: ldx SendFreeCnt ; Send data if necessary
rts
;----------------------------------------------------------------------------
; PUT: Output character in A.
; SER_PUT: Output character in A.
; Must return an error code in a/x.
;
PUT:
SER_PUT:
; Try to send
@ -322,34 +323,37 @@ PUT:
rts
;----------------------------------------------------------------------------
; STATUS: Return the status in the variable pointed to by ptr1.
; SER_STATUS: Return the status in the variable pointed to by ptr1.
; Must return an error code in a/x.
;
STATUS: lda ACIA_STATUS
SER_STATUS:
lda ACIA_STATUS
ldx #0
sta (ptr1,x)
txa ; SER_ERR_OK
rts
;----------------------------------------------------------------------------
; IOCTL: Driver defined entry point. The wrapper will pass a pointer to ioctl
; SER_IOCTL: Driver defined entry point. The wrapper will pass a pointer to ioctl
; specific data in ptr1, and the ioctl code in A.
; Must return an error code in a/x.
;
IOCTL: lda #<SER_ERR_INV_IOCTL ; We don't support ioclts for now
SER_IOCTL:
lda #<SER_ERR_INV_IOCTL ; We don't support ioclts for now
ldx #>SER_ERR_INV_IOCTL
rts ; Run into IRQ instead
;----------------------------------------------------------------------------
; IRQ: Called from the builtin runtime IRQ handler as a subroutine. All
; SER_IRQ: Called from the builtin runtime IRQ handler as a subroutine. All
; registers are already save, no parameters are passed, but the carry flag
; is clear on entry. The routine must return with carry set if the interrupt
; was handled, otherwise with carry clear.
;
IRQ: lda ACIA_STATUS ; Check ACIA status for receive interrupt
SER_IRQ:
lda ACIA_STATUS ; Check ACIA status for receive interrupt
and #$08
beq @L9 ; Jump if no ACIA interrupt (carry still clear)
lda ACIA_DATA ; Get byte from ACIA
@ -405,5 +409,3 @@ IRQ: lda ACIA_STATUS ; Check ACIA status for receive interrupt
jmp @L0
.endproc