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a7042ddbe4
Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
42 lines
437 B
ArmAsm
42 lines
437 B
ArmAsm
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; Ullrich von Bassewitz, 28.09.1998
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; Banking routines for the 610.
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;
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.export set_bank, sys_bank, restore_bank
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.importzp ptr1, segsave
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.include "cbm610.inc"
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.code
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.proc sys_bank
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pha
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lda IndReg
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sta segsave
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lda #$0F
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sta IndReg
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pla
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rts
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.endproc
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.proc set_bank
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pha
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lda IndReg
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sta segsave
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pla
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sta IndReg
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rts
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.endproc
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.proc restore_bank
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pha
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lda segsave
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sta IndReg
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pla
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rts
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.endproc
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