The boot screen after adding flag x to cpurc (1st line of cpurc is:
#!/bin/rc -x ) doesn't change.
I attach rewritten boot screen from Qemu:
==================================================
ata1 master: QEMU CD-ROM ATAPI-4 CD-Rom/DVD-Rom
Booting from Hard Disk...
MBR...PBS1...Plan 9 from Bell Labs
ELCR: 0A00
apm ax=f000 cx=f000 dx=f000 di=fff0 ebx=9e22 esi=-f0010
dev A0 port 1F0 config 0040 capabilities 0B00 mwdma 0007 udma 203F
LLBA sectors 4194304
dev A0 port 170 config 85C0 capabilities 0300 mwdma 0007 udma 203F
using sdC0!9fat!plan9.ini
.
Plan 9 Startup Menu:
===============
1. cpu
2. terminal
Selection[default==1 (15s timeout)]: 1
found 9pccpuf
.997676............................................................................................
.......................................................................+1752328..................
.......................................................................................................
.......................................................................................................
....................................+426124=3176128
entry: 0xf0100020
_
==================================================
Antonin