gwyn@Brl-Vld.ARPA (05/12/84)
From: Doug Gwyn (VLD/VMB) <gwyn@Brl-Vld.ARPA> I wasn't entirely correct when I said that ProDOS doesn't care what peripherals you have but that the STARTUP routine looks at the signature bytes when you select the S[lots] option. Actually, ProDOS does look for disk devices and a clock card. It is things like serial line interfaces, printers, and mice that it pays no particular attention to until the IN# or PR#.