.include "plus4.inc"
-; ------------------------------------------------------------------------
-; BASIC header with a SYS call
-
-.segment "EXEHDR"
-
- .word Head ; Load address
-Head: .word @Next
- .word .version ; Line number
- .byte $9E ; SYS token
- .byte <(((Start / 1000) .mod 10) + '0')
- .byte <(((Start / 100) .mod 10) + '0')
- .byte <(((Start / 10) .mod 10) + '0')
- .byte <(((Start / 1) .mod 10) + '0')
- .byte $00 ; End of BASIC line
-@Next: .word 0 ; BASIC end marker
-
; ------------------------------------------------------------------------
; Startup code
SYMBOLS {
+ __LOADADDR__: type = import;
+ __EXEHDR__: type = import;
__STACKSIZE__: type = weak, value = $0800; # 2k stack
}
MEMORY {
- ZP: file = "", define = yes, start = $0002, size = $001A;
- HEADER: file = %O, start = $0FFF, size = $000E;
- RAM: file = %O, start = $100D, size = $6FF3 - __STACKSIZE__;
+ ZP: file = "", define = yes, start = $0002, size = $001A;
+ LOADADDR: file = %O, start = $0FFF, size = $0002;
+ HEADER: file = %O, start = $1001, size = $000C;
+ RAM: file = %O, start = $100D, size = $6FF3 - __STACKSIZE__;
}
SEGMENTS {
+ LOADADDR: load = LOADADDR, type = ro;
EXEHDR: load = HEADER, type = ro;
STARTUP: load = RAM, type = ro;
LOWCODE: load = RAM, type = ro, optional = yes;