diff options
Diffstat (limited to 'system/shard-x86-at/7/src/NILCHAN.ASM')
| -rw-r--r-- | system/shard-x86-at/7/src/NILCHAN.ASM | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/system/shard-x86-at/7/src/NILCHAN.ASM b/system/shard-x86-at/7/src/NILCHAN.ASM new file mode 100644 index 0000000..1ff0108 --- /dev/null +++ b/system/shard-x86-at/7/src/NILCHAN.ASM @@ -0,0 +1,53 @@ +;***************************************************************************
+;*======= Copyright (C) 1985,86 Martin Schoenbeck, Spenge =================*
+;* *
+;* Dieses Modul definiert alle Routinen, die benoetigt werden, wenn *
+;* ein Kanal nicht existiert oder bestimmte Funktionen nicht durch- *
+;* fuehren kann. *
+;* *
+;***************************************************************************
+
+ device nilchannel
+
+ dtcbroutines iocontrol
+ routine 1,devicetype
+ routine 2,frout_ok
+ routine 5,nil_size
+ routine -1,unknowncontrol
+ dtcbroutines control32
+ routine -1,no_channel_setup
+ dtcbroutines blockin
+ dtcbroutines blockout
+ routine -1,no_blockinout
+ dtcbparams nil_output,0 ;output; niltype
+
+nil_size:
+ mov al,0
+ mov cx,0
+ ret
+
+unknowncontrol:
+no_blockinout:
+ mov cx,-1
+ ret
+
+frout_ok:
+ mov cx,200 ;200 bytes frei
+ stc ;puffer leer
+ ret
+
+no_baud:
+no_bits:
+no_flow:
+no_channel_setup:
+ mov cx,1
+ ret
+
+nil_output:
+ stc
+ ret ;alle zeichen uebernommen
+
+devicetype:
+ mov ch,0 ;hoeherwertige teil immer null
+ mov cl,shard:(si+devtype) ;type dazu
+ ret
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