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-rw-r--r--Lab_2B.X/lab2b_asm.s38
1 files changed, 38 insertions, 0 deletions
diff --git a/Lab_2B.X/lab2b_asm.s b/Lab_2B.X/lab2b_asm.s
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+++ b/Lab_2B.X/lab2b_asm.s
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+.include "xc.inc"
+
+.text ;BP (put the following data in ROM(program memory))
+
+; This is a library, thus it can *not* contain a _main function: the C file will
+; define main(). However, we
+; we will need a .global statement to make available ASM functions to C code.
+; All functions utilized outside of this file will need to have a leading
+; underscore (_) and be included in a comment delimited list below.
+.global _write_0, _write_1, _wait_100us, _wait_1ms
+
+_delay_100us:
+ repeat #1593
+ nop
+ return
+
+_delay_1ms:
+ repeat #15993
+ nop
+ return
+
+_write_0: ;2 cycles for function call
+ inc LATA ;1
+ repeat #3 ;1 for load
+ nop ;3+1=4 nop
+ clr LATA ;1
+ repeat #6 ;1 for load
+ nop ;1+6=7 nop
+ return ;3 return
+
+
+_write_1: ;2 cycle call
+ inc LATA ;1
+ repeat #10;1 load
+ nop ;1+10=11 nop
+ clr LATA ;1
+ nop ;1
+ return ;3 return \ No newline at end of file