This commit is contained in:
Matthias@Dell 2023-12-21 17:27:54 +01:00
parent 811d50122f
commit 0e774c5c86
5 changed files with 88 additions and 68 deletions

View File

@ -54,7 +54,7 @@
; Interrupts
;********************************************************************************
.zeropage
IRQ_VAR: .res 1
irq_via_ifr: .res 1
.code
nmi:
lda #'%'
@ -62,26 +62,22 @@ nmi:
rti
irq:
; read IRFs, while bit 7 ist set handle interrupts
; @irq_io1:
; lda SPI_IO+IO::IFR
; sta IRQ_VAR
; bbr7 IRQ_VAR,@irq_io2
@irq_io1:
lda IO1 + IO::IFR
sta irq_via_ifr
bbr7 irq_via_ifr,@irq_io1 ; skip
bbs2 irq_via_ifr,@irq_kb1 ; shit reg -> first 8 bits
bbs5 irq_via_ifr,@irq_kb2 ; timer -> last 3 bits
@irq_io2:
lda IO2+IO::IFR
sta IRQ_VAR
bbr7 IRQ_VAR,@irq_return
bbs2 IRQ_VAR,@irq_spi_p ; check SR
bbs1 IRQ_VAR,@irq_keypad ; check CA1
lda IO2 + IO::IFR
sta irq_via_ifr
bbr7 irq_via_ifr,@irq_return ; skip
bbs2 irq_via_ifr,@irq_spi_p ; check SR
bbs1 irq_via_ifr,@irq_keypad ; check CA1
;
lda IO1+IO::IFR
sta IRQ_VAR
bbr7 IRQ_VAR,@irq_return
bbs2 IRQ_VAR,@irq_kb1 ; shit reg -> first 8 bits
bbs5 IRQ_VAR,@irq_kb2 ; timer -> last 3 bits
; this SHOULD never be reached
jsr lcd::clear
Print str_irq_unknown
Print "Unknown IRQ"
; force reset interrupt flags
lda #$ff
sta IO1 + IO::IFR
@ -234,10 +230,6 @@ str_spi_begin:
.asciiz "---BEGIN SPI---"
str_spi_start:
.asciiz "---START SPI---"
str_irq:
.asciiz "IRQ detected! "
str_irq_unknown:
.asciiz "Unknown IRQ src!"
str_io2:
.asciiz "IO2::RB='"

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@ -107,9 +107,6 @@ CODE_START:
bra @loop
; .out .sprintf("SPI: CODE_START at %x", *)
kbinit:
lda #'['
jsr lcd::print_char
@ -122,6 +119,8 @@ kbinit:
; the 3 last bits take about 230us, at @1MHz => wait 230 cycles and then the shift register
lda #230
sta kb::KB_IO + IO::T2CL
stz key_read
stz key_read+1
; enable SR interrupts
lda #(IO::IRQ::IRQ | IO::IRQ::SR)
@ -137,7 +136,7 @@ irq_on_shift_reg:
lda #'{'
jsr lcd::print_char
lda kb::KB_IO + IO::SR
sta keycode
sta key_read
stz kb::KB_IO + IO::SR
; disable SR interrupts
@ -159,7 +158,7 @@ irq_on_timer:
lda #'<'
jsr lcd::print_char
lda kb::KB_IO + IO::SR
sta keycode + 1
sta key_read + 1
lda kb::KB_IO + IO::T2CL ; clear interrupt flag
@ -173,25 +172,29 @@ irq_on_timer:
stz kb::KB_IO + IO::SR
; lda #'|'
lda keycode
lda key_read
jsr lcd::print_char
lda keycode + 1
lda key_read + 1
jsr lcd::print_char
; rotate bit 2 (last bit of keycode) into the carry
ror
ror
ror
lda keycode ; not affecting carry
lda key_read ; not affecting carry
rol ; rotate carry into byte, rotate startbit into carry
; TODO byte is inverted, maybe consider wasting 256 bytes for a bit reverse lookup table?
sta keycode + 1
sta keycode
jsr lcd::print_char
stz key_read
stz key_read+1
lda #'>'
jsr lcd::print_char
rts
keycode: .res 3
key_read: .res 2
keycode: .res 1
kb_irq1:
lda #'!'
jsr lcd::print_char

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@ -10,6 +10,8 @@ INCLUDE_IOW65C22 = 1
.scope IO
; not using a struct for this since the syntax for access would be the same,
; ie label+IO::RA
.enum
; IO-CHIPS OFFSETS FOR PINS FROM BASE ADDRESS
RB = $0 ; Register B (ORB/IRB)

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@ -22,26 +22,25 @@ LCD_IO = IO1
Import lcd,init,clear,print,print_char,set_position,set_custom_char
Import lcd,_cmd,_wait_nbusy,_write_ram,_read_ram
;********************************************************************************
; @macro Clear the screen and print a null-terminated string
; @param message: Address of the message
;********************************************************************************
;;********************************************************************************
;; @macro Clear the screen and print a null-terminated string
;; @param message: Address of the message or string literal
;; @details
;; If message is a string literal, it will be stored in rodata
;; and the address of this segment will be used
;;********************************************************************************
.macro Print message
; .out .sprintf("message is a string literal: '%s' len=%x", message, .strlen(message))
.if .match(message, "")
jsr lcd::clear
.if .match(message, "") ; message is a string literal -> store in rodata
.pushseg
.rodata
: .asciiz message
.popseg
.out .sprintf("message is a string literal: '%s' len=%x", message, .strlen(message))
jsr lcd::clear
lda #<:-
sta ARG0
lda #>:-
sta ARG1
.else
.out "message is a n0t string"
jsr lcd::clear
.else ; message is not a string
lda #<message
sta ARG0
lda #>message
@ -51,15 +50,26 @@ Import lcd,_cmd,_wait_nbusy,_write_ram,_read_ram
.endmacro
;********************************************************************************
; @macro Print a null-terminated string
; @param message: Address of the message
;********************************************************************************
;;********************************************************************************
;; @macro Print a null-terminated string
;; @param message: Address of the message or string literal
;;********************************************************************************
.macro PrintNC message
.if .match(message, "") ; message is a string literal -> store in rodata
.pushseg
.rodata
: .asciiz message
.popseg
lda #<:-
sta ARG0
lda #>:-
sta ARG1
.else ; message is not a string
lda #<message
sta ARG0
lda #>message
sta ARG1
.endif
jsr lcd::print
.endmacro

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@ -31,19 +31,30 @@ Import str, hex_char_to_uint8, hex_str_to_uint, uint8_to_hex_str
;********************************************************************************
; @function Macro for passing arguments to strf
; @param fmt: Format string address
; @param fmt: Format string address or string literal
; @param out: Output string address
; @param x0-x9: Additional parameters
; @warning Addresses as additional paramteres must be passed like this `#<addr,#>addr`
; @warning Addresses as additional paramters must be passed like this `#<addr,#>addr`
; @modifies: A, X, Y
; @see strf
;********************************************************************************
.macro Strf fmt,out,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9
@N_ARGS .set 0 ; @ so that it doesnt break cheap labels
.if .match(fmt, "") ; fmt is a string literal -> store in rodata
.pushseg
.rodata
: .asciiz fmt
.popseg
lda #<:-
sta ARG0
lda #>:-
sta ARG1
.else ; message is not a string
lda #<fmt
sta ARG0
lda #>fmt
sta ARG1
.endif
lda #<out
sta ARG2
lda #>out
@ -56,8 +67,10 @@ Import str, hex_char_to_uint8, hex_str_to_uint, uint8_to_hex_str
_StrfStoreArg x5
_StrfStoreArg x6
_StrfStoreArg x7
_StrfStoreArg x8
_StrfStoreArg x9
jsr str::strf
.out .sprintf("info: Strf: called with %d arguments", @N_ARGS)
; .out .sprintf("info: Strf: called with %d arguments", @N_ARGS)
.endmacro
; TODO allocate zp memory