diff options
| -rw-r--r-- | Lab_2B.X/lab2b_asm.s | 77 |
1 files changed, 39 insertions, 38 deletions
diff --git a/Lab_2B.X/lab2b_asm.s b/Lab_2B.X/lab2b_asm.s index 675987e..ddee29b 100644 --- a/Lab_2B.X/lab2b_asm.s +++ b/Lab_2B.X/lab2b_asm.s @@ -1,39 +1,40 @@ -.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 - -_wait_100us: - repeat #1593 - nop - return - -_wait_1ms: - repeat #15993 - nop - return - -_write_0: ;2 cycles for function call - inc LATA ;1 - repeat #2 ;1 for load - nop ;2+1=3 nop - clr LATA ;1 - repeat #7 ;1 for load - nop ;1+7=8 nop - return ;3 return - - -_write_1: ;2 cycle call - inc LATA ;1 - repeat #8 ;1 load - nop ;1+9=10 nop - clr LATA ;1 - nop ;1 - return ;3 return +.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
+
+_wait_100us:
+ repeat #1593
+ nop
+ return
+
+_wait_1ms:
+ repeat #15993
+ nop
+ return
+
+_write_0: ;2 cycles for function call
+ inc LATA ;1
+ repeat #2 ;1 for load
+ nop ;2+1=3 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 #8 ;1 load
+ nop ;1+9=10 nop
+ clr LATA ;1
+ nop ;1
+ nop ;1
+ return ;3 return
\ No newline at end of file |