Path: utzoo!utgpu!watserv1!watmath!att!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!jh4o+ From: jh4o+@andrew.cmu.edu (Jeffrey T. Hutzelman) Newsgroups: comp.sys.apple2 Subject: Re: Some observations Message-ID: Date: 1 Nov 90 00:57:19 GMT References: <71@generic.UUCP>, <9148@aggie.ucdavis.edu> Organization: Carnegie Mellon, Pittsburgh, PA Lines: 15 In-Reply-To: <9148@aggie.ucdavis.edu> YES. The GS ROM _is_ much more difficult to do than the //e ROM. The //e ROM contains a self test, Monitor ROM, and some version of AppleSoft BASIC. The GS ROM contains all that, plus the mini-assembler, plus an enhanced monitor, plus some I/O stuff. That's the easy part. Now the hard part -- the IIgs ROM also contains Toolbox code, the Control Panel, Alternate Display Mode, Memory Peeker, and Visit Monitor NDAs, and some other stuff. Of these, the most difficult to write is the IIgs toolbox, which is quite large, and considerably cleaner than the Mac toolbox. The //e ROM is 16K. The IIgs ROM is 128K. That's a considerable difference. -------------------- Jeffrey Hutzelman America Online: JeffreyH11 Internet: jh4o+@andrew.cmu.edu BITNET: JHUTZ@DRYCAS >> Apple // Forever!!! <<