Re: SEGA's arcade rendition of CHOPLIFTER my favorite 8-bit game as of late

["William Garber" <willy46pa@garberstreet.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message WIqdnR1FKejwCPDbnZ2dnUVZ_oHinZ2d@comcast.com">news:WIqdnR1FKejwCPDbnZ2dnUVZ_oHinZ2d@comcast.com...
: William Garber wrote:
: > "BluPhoenyx" <bluphoenyx@earthlink.net> wrote in message news:mM_ai.3036$tb6.1420@newsread3.news.pas.earthlink.net...
: > : Larry Stedman wrote:
: > : > Bill, they're the ones on the various Apple II sites...  I Googled
: > : > choplifter.dsk and came up with several.   That's the easiest way to get
: > : > them directly.  I keep looking for a "choplifter_IIc.dsk" or some such
: > : > but no luck.
: > : >
: > : > I put some of the games on a 3.5" disk, but the //c balked at booting
: > : > the disk because it said no ProDos, then once I had put ProDos on, it
: > : > booted, but when I tried running any of the binary game files, the //c
: > : > responded with "NO BUFFERS" and refused to run the programs.  Perhaps it
: > : > needs to run under Dos 3.3, from a 3.3 formatted diskette, which is what
: > : > I presume the 5.25" diskettes are.
: > : >
: > : > Anyone know what the NO BUFFERS means?  Is that an OS issue or a //c
: > : > issue?  Is there a way of creating some buffers?  :-)
: > :
: > :
: > : This is a general error message for whenever BASIC.SYSTEM cannot load to
: > : certain memory locations. It is triggered by several things. One is the
: > : location of HIMEM which can be set in BASIC. Also BASIC.SYSTEM has a
: > : routine to allocate 512 byte blocks from assembly. IIRC, this still
: > : requires you to set the actual HIMEM location.
: > :
: > : It may also be generated when attempting to load a file into P8
: > : protected ram. ProDOS uses a bitmap to know which pages of ram it can
: > : use to load files into. In BASIC.SYSTEM, this is generally $800...$9600
: > : (set by HIMEM). This implies both screen ram $400..7ff and above HIMEM.
: > : Looking at the disk catalog, what is the program's load address and length?
: >
: > Ah, that's it then.
: >
: > The Load Address is $07FD, and length is 32,016 bytes.
:
: So one POKE to the bitmap to permit I/O to
: page 7 and it should BLOAD or BRUN just fine.

And, now you're going to make me look up where
to POKE to, right?  :o))))))))))))))))))))))

William Garber
Email Address - willy46pa@garberstreet.com
Alt. Email - willy46pa@comcast.net
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