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Updated the cx16 library to the upstream project's prerelease 38.

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This commit is contained in:
Greg King 2020-10-17 10:36:11 -04:00
parent 77bfd163cd
commit 0f66f7569e
4 changed files with 43 additions and 38 deletions
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1
asminc/cbm_kernal.inc
View file

@ -46,6 +46,7 @@
GRAPH_SET_FONT := $FF3B
GRAPH_GET_CHAR_SIZE := $FF3E
GRAPH_PUT_CHAR := $FF41
MULTI_ACPTR := $FF44
RESTORE_BASIC := $FF47
CLOCK_SET_DATE_TIME := $FF4D
CLOCK_GET_DATE_TIME := $FF50

10
asminc/cx16.inc
View file

@ -1,5 +1,5 @@
;
; CX16 r37 definitions
; CX16 r38 definitions
;
; ---------------------------------------------------------------------------
@ -439,7 +439,7 @@ NMIVec := $0318
.scope PSG ; Programmable Sound Generator
.struct
PITCH .word
VOL .byte ; Left, right channels; volume
VOL .byte ; Right, left sides; volume
WAVEFORM .byte ; Wave shape, pulse width
.endstruct
LEFT = %01 << 6
@ -544,9 +544,11 @@ NMIVec := $0318
VERALOG .byte ; Boolean: log VERA activity
KEYBOARDLOG .byte ; Boolean: log keyboard data
ECHO .byte ; Type of echo that's enabled
SAVEXIT .byte ; Boolean: save on exit
SAVEXIT .byte ; Boolean: save machine state on exit
GIFREC .byte ; Method of recording GIF movie
.org $9FBD
.res 2
CYCLECOUNT .dword ; Running count of CPU cycles (Read-Only)
.res 1
KEYMAP .byte ; Current keyboard layout number (Read-Only)
DETECT .byte 2 ; If is "16" string, then running on emulator (RO)
.endstruct

14
include/cx16.h
View file

@ -3,7 +3,7 @@
/* cx16.h */
/* */
/* CX16 system-specific definitions */
/* For prerelease 37 */
/* For prerelease 38 */
/* */
/* */
/* This software is provided "as-is", without any expressed or implied */
@ -283,12 +283,14 @@ struct __emul {
unsigned char debug; /* Boolean: debugging enabled */
unsigned char vera_action; /* Boolean: displaying VERA activity */
unsigned char keyboard; /* Boolean: displaying typed keys */
unsigned char echo; /* How Kernal output should be echoed to host */
unsigned char save_on_exit; /* Boolean: save SD card when quitting */
unsigned char echo; /* How to send Kernal output to host */
unsigned char save_on_exit; /* Boolean: save machine state on exit */
unsigned char gif_method; /* How GIF movie is being recorded */
unsigned char unused[0xD - 0x6];
unsigned char keymap; /* Keyboard layout number */
const char detect[2]; /* "16" if running on x16emu */
unsigned char const unused1[2];
unsigned long const cycle_count; /* Running total of CPU cycles (8 MHz.) */
unsigned char const unused2[1];
unsigned char const keymap; /* Keyboard layout number */
char const detect[2]; /* "16" if running on x16emu */
};
#define EMULATOR (*(volatile struct __emul *)0x9FB0)

56
libsrc/cx16/cputc.s
View file

@ -1,5 +1,5 @@
;
; 2019-09-23, Greg King
; 2020-10-13, Greg King
;
; void __fastcall__ cputcxy (unsigned char x, unsigned char y, char c);
; void __fastcall__ cputc (char c);
@ -11,52 +11,47 @@
.import gotoxy, PLOT
.include "cx16.inc"
.macpack generic
; First, move to a new position.
; Move to a cursor position, then print a character.
_cputcxy:
pha ; Save C
jsr gotoxy ; Set cursor, drop x and y
pla ; Restore C
pla
; Print a character.
; Print a character -- also used as an internal function.
_cputc: cmp #$0D ; LF?
_cputc: cmp #$0D ; X16 '\n'?
beq newline
cmp #$0A ; CR?
beq plotx0
cmp #$0A ; X16 '\r'?
beq cr
; Printable char of some sort
; Printable char. of some sort.
; Convert it from PetSCII into a screen-code.
cmp #' '
blt cputdirect ; Other control char
convert:
tay
bmi L10
cmp #$60
blt L2
and #<~%00100000
bra cputdirect
; Handle character if high bit set
L10: and #<~%10000000 ; Remove high bit
ora #%01000000
bra cputdirect
L2: and #<~%01000000
lsr a ; Divide by 256/8
lsr a
lsr a
lsr a
lsr a
tax ; .X = %00000xxx
tya
eor pet_to_screen,x
cputdirect:
jsr putchar ; Write character to screen, return .Y
; Advance cursor position.
; Advance the cursor position.
iny
cpy LLEN ; Reached end of line?
bne L3
jsr newline ; Next line
ldy #$00 ; + CR
jsr newline ; Wrap around
cr: ldy #$00
L3: sty CURS_X
rts
@ -70,7 +65,6 @@ newline:
; Set the cursor's position, calculate RAM pointer.
plotx0: stz CURS_X
plot: ldy CURS_X
ldx CURS_Y
clc
@ -96,3 +90,9 @@ putchar:
lda CHARCOLOR
sta VERA::DATA0
rts
.rodata
pet_to_screen:
.byte %10000000,%00000000,%01000000,%00100000 ; PetSCII -> screen-code
.byte %01000000,%11000000,%10000000,%10000000