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Re: IIe ROM code modifications - exchange tape drivers for ???
- Subject: Re: IIe ROM code modifications - exchange tape drivers for ???
- From: "Craig Bower" <to.email.me@post.a.request.message>
- Date: Sun, 10 Apr 2005 01:42:04 GMT
- Newsgroups: comp.sys.apple2
- References: <a8Y5e.17066$vt1.13830@edtnps90> <fv_5e.14031$m31.136681@typhoon.sonic.net>
- Reply-to: "Craig Bower" <to.email.me@post.a.request.message>
- Xref: g2news1.google.com comp.sys.apple2:10231
"Andy McFadden" <fadden@fadden.com> wrote in message
news:fv_5e.14031$m31.136681@typhoon.sonic.net...
>
> In the original monitor ROM:
>
> FEF6-FECD (41 bytes)
> FEFD-FF2B (47 bytes)
> FCC9-FD0B (67 bytes)
>
> Even with shared functions like NXTA1, the whole thing is under 200 bytes.
> Autostart ROM locations will be different, but general idea is the same.
> Not a lot of room to add features.
Hi Andy,
Perfect, thanx! - 200 bytes? Yikes! Might have to make it a "patch" style
of code,
where there's a footprint or two there in the monitor tape routines, to look
elsewhere
for disk-accessed memory resident code.
Thanks again!
later,
Craig