diff options
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | crt0_cart.s | 72 |
2 files changed, 74 insertions, 2 deletions
@@ -314,8 +314,8 @@ mkcart: mkcart.c # tail -c+2 taimain.xex > romable_taimain.raw # rm -f taimain.xex -romable_taimain.raw: $(TAIMAIN_C_SRC) $(TAIMAIN_ASM_SRC) $(TAIMAIN_HDRS) $(BIGNUM_SRC) $(BIGNUM_HDRS) $(TAIMAIN_LIBS) - cl65 --config cartbank3.cfg -m taipan.map -t atari -T -I. -L. -DFONT_ADDR=0x9c00 --start-addr 0x3ff -Wl -D__STACKSIZE__=0x200 -O -Wl -D__SYSTEM_CHECK__=1 -Wl -D__AUTOSTART__=1 -Wl -D__EXEHDR__=1 -DCART_TARGET=1 --asm-define CART_TARGET=1 -DBIGNUM=BIGFLOAT -o romable_taimain.raw.in $(TAIMAIN_C_SRC) $(TAIMAIN_ASM_SRC) $(BIGNUM_SRC) $(TAIMAIN_LIBS) +romable_taimain.raw: $(TAIMAIN_C_SRC) $(TAIMAIN_ASM_SRC) $(TAIMAIN_HDRS) $(BIGNUM_SRC) $(BIGNUM_HDRS) $(TAIMAIN_LIBS) crt0_cart.s + cl65 --config cartbank3.cfg -m taipan.map -t atari -T -I. -L. -DFONT_ADDR=0x9c00 --start-addr 0x3ff -Wl -D__STACKSIZE__=0x200 -O -Wl -D__SYSTEM_CHECK__=1 -Wl -D__AUTOSTART__=1 -Wl -D__EXEHDR__=1 -DCART_TARGET=1 --asm-define CART_TARGET=1 -DBIGNUM=BIGFLOAT -o romable_taimain.raw.in $(TAIMAIN_C_SRC) $(TAIMAIN_ASM_SRC) $(BIGNUM_SRC) $(TAIMAIN_LIBS) crt0_cart.s tail -c+2 romable_taimain.raw.in > romable_taimain.raw rm -f romable_taimain.raw.in diff --git a/crt0_cart.s b/crt0_cart.s new file mode 100644 index 0000000..ec3e423 --- /dev/null +++ b/crt0_cart.s @@ -0,0 +1,72 @@ +; +; Startup code for cc65 (ATARI version) +; +; Contributing authors: +; Mark Keates +; Freddy Offenga +; Christian Groessler +; Stefan Haubenthal +; + + .export __STARTUP__ : absolute = 1 ; Mark as startup + .export _exit, start + + .import initlib, donelib + .import callmain, zerobss + .import __RESERVED_MEMORY__ + .import __RAM_START__, __RAM_SIZE__ + .include "zeropage.inc" + .include "atari.inc" + +; ------------------------------------------------------------------------ + +.segment "STARTUP" + + rts ; fix for SpartaDOS / OS/A+ + ; They first call the entry point from AUTOSTRT; and + ; then, the load address (this rts here). + ; We point AUTOSTRT directly after the rts. + +; Real entry point: + +start: + +; Clear the BSS data. + + jsr zerobss + +; Setup arg stack + lda MEMTOP + sta sp + lda MEMTOP+1 + sta sp+1 + +; Call the module constructors. + + jsr initlib + +; Set the left margin to 0. + + ldy #0 + sty LMARGN + +; Set the keyboard to upper-/lower-case mode. + + ldx SHFLOK + sty SHFLOK + +; Push the command-line arguments; and, call main(). + + jsr callmain + +; Call the module destructors. This is also the exit() entry. + +_exit: jsr donelib ; Run module destructors + +; Back to DOS. + + rts + +; *** end of main startup code + +; ------------------------------------------------------------------------ |