<div dir="ltr"><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">My PCI device information is as follows:</p><pre style="margin-top:0px;padding:5px;border:0px;font-size:13px;overflow:auto;width:auto;max-height:600px;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,sans-serif;word-wrap:normal;background-color:rgb(238,238,238)"><code style="margin:0px;padding:0px;border:0px;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,sans-serif;white-space:inherit">Print Begin Configuration space...
BAR 0 start address: f6000000
BAR 0 end address: f6ffffff
BAR 0 flags: 140204
BAR 0 IO / MEM: MEM
BAR 0 PREFETCH NON PREFETCH: NON-PREFETCH
BAR 1 start address: 0
BAR 1 end address: 0
BAR 1 flags: 0
BAR 1 IO / MEM: MEM
BAR 1 PREFETCH NON PREFETCH: NON-PREFETCH
BAR 2 start address: f0000000
BAR 2 end address: f3ffffff
BAR 2 flags: 14220c
BAR 2 IO / MEM: MEM
BAR 2 PREFETCH NON PREFETCH: PREFETCH
</code></pre><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">I want to write a byte and read it back to BAR2 for a test simple . Is it possible to write a byte to BAR2 start address</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px"><br></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">Sample code is welcomed.</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px"><br></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">Regards</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px"><br></p></div>