moved cart header into seperate file, moved nmi stub into several file, tweaked linker config

libsrc/gamate/crt0.s

@@ -1,33 +1,16 @@
 
-        .export         __STARTUP__ : absolute = 1      ; Mark as startup
+        .export         Start, _exit
 
         .import         initlib, donelib, callmain
         .import         push0, _main, zerobss, copydata
 
-        .import         IRQStub
-
         ; Linker generated symbols
         .import         __RAM_START__, __RAM_SIZE__
-        .import         __ROM_START__, __ROM_SIZE__
-        .import         __STARTUP_LOAD__,__STARTUP_RUN__, __STARTUP_SIZE__
-        .import         __CODE_LOAD__,__CODE_RUN__, __CODE_SIZE__
-        .import         __RODATA_LOAD__,__RODATA_RUN__, __RODATA_SIZE__
 
         .include        "zeropage.inc"
         .include        "gamate.inc"
 
-        .segment "STARTUP"
-
-        .word 0                                         ; +00 checksum from 7000-7fff (simple 8bit adds)
-        .byte 1, 0, 1                                   ; +02 flags
-        .byte "COPYRIGHT BIT CORPORATION", 0, $ff       ; +05 copyright
-        ; system vectors
-        jmp     reset                                   ; +20 reset entry
-        jmp     nmi                                     ; +23 nmi entry
-        jmp     IRQStub                                 ; +26 irq entry (135 hz)
-
-;-------------------------------------------------------------------------------
-reset:
+Start:
         ; setup the CPU and System-IRQ
 
         ; Initialize CPU
@@ -67,12 +50,8 @@ _exit:
         jsr     donelib         ; Run module destructors
 
         ; reset (start over)
-        jmp     reset
+        jmp     Start
 
         .export initmainargs
 initmainargs:
         rts
-
-;-------------------------------------------------------------------------------
-nmi:
-        rts

libsrc/gamate/header.s

@@ -0,0 +1,16 @@
+        ; The following symbol is used by linker config to force the module
+        ; to get included into the output file
+        .export         __STARTUP__: absolute = 1
+
+        .import         Start, IRQStub, NMIStub
+
+
+        .segment "STARTUP"
+
+        .word 0                                         ; +00 checksum from 7000-7fff (simple 8bit adds)
+        .byte 1, 0, 1                                   ; +02 flags
+        .byte "COPYRIGHT BIT CORPORATION", 0, $ff       ; +05 copyright
+        ; system vectors
+        jmp     Start                                   ; +20 reset entry
+        jmp     NMIStub                                 ; +23 nmi entry
+        jmp     IRQStub                                 ; +26 irq entry (135 hz)

libsrc/gamate/nmi.s

@@ -0,0 +1,7 @@
+;
+; NMI handling (Gamate version)
+;
+        .export NMIStub
+
+NMIStub:
+        rts