Mode can be a24d16, a16d16 or a16d8.
Base and offset are byte addresses/offsets. They may be supplied as hex numbers.
The preceeding call defined the default values for mode, base and offset.
The command vme() = vme_reopen closes the VME bus and re-opens the connection. It is intended to be used after the VME crate has been switched off while ONLINE was running.
The command vme() = vme_sysreset asserts the SYSRES
line. Most of the devices
return to their power-on configuration.
e.g.:
vme( a24d16, 0xef00, 0x02) = 0x100
Writes 1 to channel 8 which may be the first output channel.
vme( , , ) = 0x000
This call clears it.