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| author | Matt Strapp <msattr@gmail.com> | 2020-02-09 09:32:49 -0600 |
|---|---|---|
| committer | Matt Strapp <msattr@gmail.com> | 2020-02-09 09:32:49 -0600 |
| commit | 7a5e3d7163c477eaff3b8ed8a6f83ecd7325f19c (patch) | |
| tree | 7edbc1348c458fb694ac93f692316ad73cef4319 /Lab_2B.X | |
| parent | Add C file (diff) | |
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Add asm file
Diffstat (limited to '')
| -rw-r--r-- | Lab_2B.X/lab2b_asm.s | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Lab_2B.X/lab2b_asm.s b/Lab_2B.X/lab2b_asm.s new file mode 100644 index 0000000..ec29c69 --- /dev/null +++ b/Lab_2B.X/lab2b_asm.s @@ -0,0 +1,38 @@ +.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
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