[Coco] R+DOS/16 IDE support: I learned about the $052DDC offset the hard way.

Wed Apr 8 03:45:56 EDT 2015

Hi Juan,
I believe only the 80x24 text screen was done, no graphics was implemented, I think.  Besides the V9958 has a wealth of modes to explore.  Perhaps you could integrate the new screens into the current commands and/or create new commands.  I agree though, integrating what Luis has already done would be the first step.  Keep up the great work!

Kip Koon
computerdoc at sc.rr.com
http://www.cocopedia.com/wiki/index.php/Kip_Koon

> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Juan Castro
> Sent: Wednesday, April 08, 2015 2:22 AM
> To: CoCo List
> Subject: Re: [Coco] R+DOS/16 IDE support: I learned about the $052DDC offset the hard way.
> 
> Luis did RSDOS code already, I believe the work left is just integration into the ROM.
> Em 08/04/2015 03:16, "Kip Koon" <computerdoc at sc.rr.com> escreveu:
> 
> > Hi Juan,
> > Do you have the information on the Yamaha V9958 VDG chip and it's
> > registers' address locations?
> >
> > Kip Koon
> > computerdoc at sc.rr.com
> > http://www.cocopedia.com/wiki/index.php/Kip_Koon
> >
> >
> >
> > > -----Original Message-----
> > > From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Juan
> > Castro
> > > Sent: Wednesday, April 08, 2015 2:09 AM
> > > To: CoCoList for Color Computer Enthusiasts; Lista CoCo
> > > Subject: Re: [Coco] R+DOS/16 IDE support: I learned about the
> > > $052DDC
> > offset the hard way.
> > >
> > > Ah, if anybody downloaded it before reading this, download it again.
> > > I
> > changed HSET MEM COPY to be faster.
> > >
> > > Juan Castro
> > > Enviado do meu Olivetti Programma 101
> > >
> > >
> > > On Wed, Apr 8, 2015 at 2:40 AM, Juan Castro <jccyc1965 at gmail.com> wrote:
> > > > It was less invasive and it was WRONG -- all file additions had
> > > > been
> > left out!
> > > >
> > > > This one is much closer to being commit-worthy IMHO:
> > > > https://dl.dropboxusercontent.com/u/15643089/hdbdos-16krom-1.5-pro
> > > > posa
> > > > l.patch
> > > >
> > > > What it does that MAY still raise eyebrows:
> > > > - Some black magic to reinsert the includes if you go to cocoroms/
> > > > and make
> > > > - If compiling the IDE+USELBA version, I use that voodoo sector
> > > > offset $052DDC, and 0 for all others
> > > > - IDE default port address is now $FF50
> > > > - Version has been bumped to 1.5R1
> > > > - When compiling the 16K versions, the OS name is R+DOS/16 instead
> > > > of HDB-DOS. Too much vanity?
> > > >
> > > > A change in HSET MEM semantics:
> > > > - HSET MEM COPY copies ROM to RAM, leaves RAM active
> > > > - HSET MEM just switches to RAM, yeah, instant crash if you
> > > > haven't a functioning BASIC in RAM
> > > > - HRESET MEM switches to ROM.
> > > >
> > > > Also, there's no DriveWire speed change anymore. I'll think about
> > > > how to reintroduce that in a polite way.
> > > >
> > > > The compiled ROMs are in the link below -- each and every one of
> > > > them should be usable, with all its respective disk semantics
> > > > intact, plus my fluff. MiniIDE users, if you feel courageous
> > > > enough to alter the board's circuit to allow for a 16K ROM, feel
> > > > free to dare. Caveat emptor. Also, I'd like DriveWire users to
> > > > test if printing still works.
> > > >
> > > > https://dl.dropboxusercontent.com/u/15643089/16kroms.zip
> > > >
> > > > The good news? I didn't have to shorten any messages!
> > > >
> > > > Juan Castro
> > > > Enviado do meu Olivetti Programma 101
> > > >
> > > >
> > > > On Sun, Apr 5, 2015 at 3:48 PM, Tormod Volden
> > > > <lists.tormod at gmail.com>
> > wrote:
> > > >> Hi Juan,
> > > >>
> > > >> Is 052DDC some kind of standard value? In case it maybe should be
> > > >> applied to HDB-DOS proper. Are there other common values?
> > > >>
> > > >> I looked through your patch and it it looks indeed less invasive
> > > >> than what I have seen before. But what changes in this patch
> > > >> require going to 16K?
> > > >>
> > > >> I am however inclined to keep HDB-DOS conservatively to 8KB and
> > > >> rather let people explore Brett's new DOS for everything that one
> > > >> can do with 16KB.
> > > >>
> > > >> Regards,
> > > >> Tormod
> > > >>
> > > >>
> > > >>
> > > >>
> > > >> On Sun, Apr 5, 2015 at 2:09 AM, Juan Castro <jccyc1965 at gmail.com>
> > wrote:
> > > >>> I tried to use a compiled-from-sources 16 KB LBA HDB-DOS ROM
> > > >>> with my BASIC goodies in my MiniIDE, and got nothing. Then I
> > > >>> remembered about the FF70 port thing, changed it to FF50 -- nopw
> > > >>> I got gibberish from the disk instead of a lockup.
> > > >>>
> > > >>> I backtracked EVERY change in the ROM, one by one. At some point
> > > >>> I even thought the recent TFSIDE patch was the culprit. After
> > > >>> taking everything out (and burning some 20 EPROMs in the
> > > >>> process). After much disappointment, I got to a difference of 3
> > > >>> bytes between my compiled ROM and the one that worked.
> > > >>>
> > > >>> Those bytes were 00 00 00 in my ROM, and 05 2D DC in the working
> > > >>> ROM that came with the MiniIDE. Yeah. Hard-coded sector offset.
> > > >>>
> > > >>> Now I FINALLY have a 16K HDB-DOS derivative for the CoCo 1/2
> > > >>> with the BASIC enhancements I had before (except DW support)
> > > >>> working on an IDE interface. It should work in a Glenside IDE or
> > > >>> a SuperIDE if you can coax the hardware into seeing a 16K Disk ROM. Here's it:
> > > >>>
> > > >>> https://dl.dropboxusercontent.com/u/15643089/16k-hdblba.rom
> > > >>>
> > > >>> And below is the source patch. On its face, it's a less invasive
> > > >>> patch
> > > >>> -- it just creates 16k ROMs and leaves disk support as-is. I
> > > >>> imagine ROM 16k-xxxxxx.rom should work pretty much as well as
> > > >>> the plain 8k xxxxxx.rom, for every xxxxxx.
> > > >>>
> > > >>> https://dl.dropboxusercontent.com/u/15643089/16k-ide-rom.patch
> > > >>>
> > > >>> Next challenge is to reintroduce DW support into an IDE ROM as
> > > >>> an add-on. That will be tricky, but, I imagine, less than
> > > >>> introducing IDE support into a DW ROM.
> > > >>>
> > > >>> Also, I didn't hack my MiniIDE; I used an MPI.
> > > >>>
> > > >>> Juan Castro
> > > >>> Enviado do meu Olivetti Programma 101
> > > >>>
> > > >>> --
> > > >>> Coco mailing list
> > > >>> Coco at maltedmedia.com
> > > >>> https://pairlist5.pair.net/mailman/listinfo/coco
> > > >>
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