Re: 65c02 in Apple][

["Bill Garber" <willy46pa@comcast DOT net>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20040520220343.07961.00000938@mb-m04.aol.com">news:20040520220343.07961.00000938@mb-m04.aol.com...
: Bill Garber wrote:
:
: >"Michael J. Mahon" <mjmahon@aol.com> wrote in message
: >20040520122305.07718.00000774@mb-m24.aol.com">news:20040520122305.07718.00000774@mb-m24.aol.com...
: >: Bill Garber wrote:
: >:
: >: >I just tried it in the setup I have that it works in,
: >: >and although it tries to boot, it says:
: >: >"Unable To Load ProDOS".
: >:
: >: Then you've succeeded.
: >:
: >: That message comes from the ProDOS boot block,
: >: and indicates that you don't have ProDOS in the
: >: root directory.
: >
: >Then I have failed, as ProDOS "does" exist in the
: >disks root directory, and will boot with Cs07 at
: >"00" and by resetting and typing "PR#s". Would
: >you possibly have an explanation for that? Maybe
: >I need to reformat the volume and rewrite the
: >files to it again.
:
: What I meant was that in order to get to that message,
: your machine had to run a fair number of instructions
: correctly.

Yep, I knew what you meant, and thought that
I had implied as much. sorry if I didn't.

: A possible explanation is that the boot block code
: contains some code that does not work correctly.

That is possible, and I'm working with Rich now
on the 6502 coding, and have gotten to the point
above with the 6502 and no SpeedDemon.

: Marginal timing could cause such an effect, but it
: is wierd that it is repeatable.

What is really weird, is that I have the exact problem
now, but I know why it won't boot. The blocks are all
marked as used, and none free. Hope all that is is a
timing issue. Got any ideas for us?

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa @ comcast DOT net
Change DOT to a dot to contact me



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