From: ian <ian>
Date: Thu, 22 Dec 2005 23:29:17 +0000 (+0000)
Subject: slight optimisation; improvement of doc comments
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=83a583e58612e9d087dadeccf2b7e1916022bcab;p=trains.git

slight optimisation; improvement of doc comments
---

diff --git a/detpic/serout.asm b/detpic/serout.asm
index 325c6bb..4b3011a 100644
--- a/detpic/serout.asm
+++ b/detpic/serout.asm
@@ -5,32 +5,30 @@
  code
 ;----------------------------------------
 serial_addbyte
-;  W		byte for transmission to host	trashed
-;  FSR0		any				set for serial_addbyte_another
-;  outmsg_*	buffer not full			adjusted appropriately
-;  STATUS	any				trashed
-;  all others	any				not interfered with
+;  W			byte to xmit to host	trashed
+;  FSR0			any			set for serial_addbyte_another
+;  outbuf, outmsg_*	buffer not full		adjusted appropriately
+;  STATUS		any			trashed
+;  all others		any			not interfered with
 ;
 	mov_lfsr outbuf, 0
 	mov_ff	outmsg_end, FSR0L
 ;...
 serial_addbyte_another
-;  W		byte for transmission to host	trashed
-;  FSR0		from serial_addbyte[_another]	set for serial_addbyte_another
-;  outmsg_*	buffer not full			adjusted appropriately
-;  STATUS	any				trashed
-;  all others	any				not interfered with
+;  W			byte to xmit to host	trashed
+;  FSR0			from _addbyte[_another]	updated for ..._another again
+;  outbuf, outmsg_*	buffer not full		adjusted appropriately
+;  STATUS		any			trashed
+;  all others		any			not interfered with
 ;
 	mov_wf	POSTINC0
 	bc_f	FSR0L, 7
 	mov_fw	FSR0L
 	mov_wf	outmsg_end
-	xor_wfw	outmsg_begin
-	bra_z	serial_addbyte_toomany
+	cmp_fw_ifne outmsg_begin
 	return
-
-;-----
-serial_addbyte_toomany panic morse_HB
+	; too many
+	panic morse_HB
 
 ;======================================================================
  include final.inc