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cx16: added cx16.get_program_args() and cx16.set_program_args()

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Irmen de Jong 2024-02-04 11:35:09 +01:00
parent 3c77f8a020
commit 344a1b9eb8
2 changed files with 51 additions and 3 deletions
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41
compiler/res/prog8lib/cx16/syslib.p8
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@ -1172,6 +1172,47 @@ sub search_x16edit() -> ubyte {
}}
}
sub set_program_args(uword args_ptr, ubyte args_size) {
; Set the inter-program arguments.
; standardized way to pass arguments between programs is in ram bank 0, address $bf00-$bfff.
; see https://github.com/X16Community/x16-docs/blob/master/X16%20Reference%20-%2007%20-%20Memory%20Map.md#bank-0
sys.push(getrambank())
rambank(0)
sys.memcopy(args_ptr, $bf00, args_size)
if args_size<255
@($bf00+args_size) = 0
rambank(sys.pop())
}
asmsub get_program_args(uword buffer @R0, ubyte buf_size @R1, bool binary @Pc) {
; Retrieve the inter-program arguments. If binary=false, it treats them as a string (stops copying at first zero).
; standardized way to pass arguments between programs is in ram bank 0, address $bf00-$bfff.
; see https://github.com/X16Community/x16-docs/blob/master/X16%20Reference%20-%2007%20-%20Memory%20Map.md#bank-0
%asm {{
lda #0
rol a
sta P8ZP_SCRATCH_REG
lda $00
pha
stz $00
stz P8ZP_SCRATCH_W1
lda #$bf
sta P8ZP_SCRATCH_W1+1
ldy #0
- lda (P8ZP_SCRATCH_W1),y
sta (cx16.r0),y
beq +
_continue iny
cpy cx16.r1L ; max size?
bne -
beq ++
+ lda P8ZP_SCRATCH_REG ; binary?
bne _continue
+ pla
sta $00
}}
}
}
sys {

13
docs/source/libraries.rst
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@ -106,7 +106,6 @@ sys (part of syslib)
including the uninitialized ones ("BSS" variables) and the uninitialized memory blocks reserved by the `memory()` function.
Can be used to load dynamic data after the program, instead of hardcoding something.
``wait (uword jiffies)``
wait approximately the given number of jiffies (1/60th seconds)
Note: the regular system irq handler has run for this to work as it depends on the system jiffy clock.
@ -527,9 +526,13 @@ The compiler needs it for various built-in system routines.
cx16
----
This is available on *all targets*, it is always imported as part of syslib.
On the Commander X16 this module contains a whole bunch of things specific to that machine.
On the Commander X16 this module contains a *whole bunch* of things specific to that machine.
It's way too much to include here, you have to study the
`source code <https://github.com/irmen/prog8/tree/master/compiler/res/prog8lib/cx16/syslib.p8>`_
to see what is there.
On the other targets, it only contains the definition of the 16 memory mapped virtual registers
(cx16.r0 - cx16.r15) and the following two utility routines:
(cx16.r0 - cx16.r15) and the following utility routines:
``save_virtual_registers()``
save the values of all 16 virtual registers r0 - r15 in a buffer. Might be useful in an IRQ handler to avoid clobbering them.
@ -537,6 +540,10 @@ On the other targets, it only contains the definition of the 16 memory mapped vi
``restore_virtual_registers()``
restore the values of all 16 virtual registers r0 - r15 from the buffer. Might be useful in an IRQ handler to avoid clobbering them.
``cpu_is_65816()``
Returns true if the CPU in the computer is a 65816, false otherwise (6502 cpu).
bmx (cx16 only)
----------------
Routines to load and save "BMX" files, the CommanderX16 bitmap file format.