. [Bug #18940] Extend BSAVE and BLOAD Command To Memory Banks 0 and 1
Extended debugger BLOAD with bank support:
. BLOAD [file],[bank:]address[,length]
. BLOAD [file],[bank:]address[:end]
. If no filename specified, will use last BLOAD or BSAVE filename.
Extended debugger BSAVE with bank support:
. BSAVE [file],[bank:]address,length
. BSAVE [file],[bank:]address:end
. If no filename specified, defaults to: '####.####.[bank##].bin'
(where the form is <address>.<length>.bin)