From: ian <ian>
Date: Wed, 21 Dec 2005 15:11:57 +0000 (+0000)
Subject: nmra-stream poke host about buffers
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=3917dfe72d69d6ba9a0ac1f65a51b54dd03ff636;p=trains.git

nmra-stream poke host about buffers
---

diff --git a/detpic/nmra-stream.asm b/detpic/nmra-stream.asm
index b4acb46..8f42571 100644
--- a/detpic/nmra-stream.asm
+++ b/detpic/nmra-stream.asm
@@ -424,6 +424,9 @@ advance_read_buffer
 ; clear bit 6 (will set back to buffer 0 if has overflowed to 4)
 	bc_fa	totrack,6  
 	debug 	'9'	; write 'v' to serial port
+
+	bs_f	flags, flags_tellnmra	; ensure we tell
+	bs_f	PIE1, TXIE		;  host to send us more
 	return
 
 
diff --git a/detpic/variables.asm b/detpic/variables.asm
index 884d4ec..776f39f 100644
--- a/detpic/variables.asm
+++ b/detpic/variables.asm
@@ -8,6 +8,9 @@ idloc1		res	1	; from 2nd idlocs byte; bit 7 is master:
 idloc1_master	equ	7
 idloc1_boarddet	equ	6
 
+flags		res	1	; miscellaneous state flags
+flags_tellnmra	equ	7	; must tell host about NMRA buffer state
+
 t		res	1	; general temporary
 t_dolocal	res	1	; temporary for <foo>_local_do
 outmsg_end	res	1	; first empty byte in outbuf