Lines Matching +full:write +full:- +full:enable +full:- +full:delay

1 .. SPDX-License-Identifier: GPL-2.0
11 ----------------
24 ------------------
26 I have a RadioTrack card from back when I ran an MS-Windows platform.  After
27 converting to Linux, I found Gideon le Grange's command-line software for
29 comfortable X-windows interface, and added a scanning feature.  For hack
32 broadcast TV channels, situated just below and above the 87.0-109.0 MHz range.
36 So, without further delay, here are the details.
40 --------------------
42 The RadioTrack card is an ISA 8-bit FM radio card.  The radio frequency (RF)
54 --------------------------------
60 parallel with one write to the ioport.  The only feedback available through
65 .. code-block:: none
68 	+------+------+------+--------+--------+-------+---------+--------+
70 	|  (+) |  (-) |      | Detect | Audio  | (bit) | (latch) | Update |
71 	|      |      |      | Enable | Enable |       |         | Enable |
72 	+------+------+------+--------+--------+-------+---------+--------+
79 0	 1  volume +    (some delay required)
80 1	 0  volume -    (some delay required)
85 Stereo Detect Enable	Description
91 Results available by reading ioport >60 msec after last port write.
96 Radio to Audio (path) Enable	Description
99 1				Enable path  (audio produced)
112 24-bit code, where bits = (freq*40) + 10486188.
117 Tune Update Enable	Description
125 --------------------
127 .. code-block:: none
129 	Default:        BASE <-- 0xc8  (current volume, no stereo detect,
130 					radio enable, tuner adjust disable)
132 	Card Off:	BASE <-- 0x00  (audio mute, no stereo detect,
135 	Card On:	BASE <-- 0x00  (see "Card Off", clears any unfinished business)
136 			BASE <-- 0xc8  (see "Default")
138 	Volume Down:    BASE <-- 0x48  (volume down, no stereo detect,
139 					radio enable, tuner adjust disable)
141 			BASE <-- 0xc8  (see "Default")
143 	Volume Up:      BASE <-- 0x88  (volume up, no stereo detect,
144 					radio enable, tuner adjust disable)
146 			BASE <-- 0xc8  (see "Default")
148 	Check Stereo:   BASE <-- 0xd8  (current volume, stereo detect,
149 					radio enable, tuner adjust disable)
151 			x <-- BASE     (read ioport)
152 			BASE <-- 0xc8  (see "Default")
159 			to write a "zero" bit,
160 			BASE <-- 0x01  (audio mute, no stereo detect, radio
162 			BASE <-- 0x03  (audio mute, no stereo detect, radio
164 			to write a "one" bit,
165 			BASE <-- 0x05  (audio mute, no stereo detect, radio
167 			BASE <-- 0x07  (audio mute, no stereo detect, radio