[Coco] Rom2Ram (was) Easy way to copy 40 track disks to the CoCoSDC?

[Bill Pierce]

Darren, good idea. I haven't looked at that routine in 20 years. The one I used most was a "basic loader" that poked the code from data statements. I'm sure it had the interrupts blocked while copying. I had gotten the routine from Rainbow back in the early 80s. I know at one time I had used EDTASM to make a rom2ram.asm file as well as an ML file loadable by basic, by using zbug on the poked code.
I haven't even seen that code in years, though I know it's on one of my dsk images if not 20 or 30 of them.
I used it as part of a routine for my Coco 2 to set up several enhancements to ECB and eventually to DECB, like OS9 style direct entry i.e:

LYRA<ENTER>
as opposed to
LOADM"LYRA":EXEC<ENTER>
(Yes, it worked on basic and ML programs)

Other enhancements were "current drive #" (i.e."D0:")instead of "OK:" prompt, alternate cursors, drive 0 & 1 as drives 0,1,2,& 3, and HPOKE which was a "word" poke (poking 2 bytes at once). I also added a highly modified version of Steve Bjork's "Mouse" utility to the bunch, with 51 column pmode 4 screen, dual fonts, changable mouse pointers, and loadable fonts. I included almost every mod I could find in my old Rainbows & Hot Cocos. All the routines were stored above DECB. I know I have the BIN file, but I'd probably have to disassemble it to get a source file as I think that disk got trashed during the flood of hurricane Floyd. It was all done in EDTASM. Originally, it started as the "Mouse" program for cassette, then I added a couple of mods to that (51 column screen), then I bought my disk drive and started adding the drive enhancements.

Once I got my Coco 3, I no longer needed most of the stuff and the program was left behind. I think I did do one Coco 3 version with the disk mods and the direct enrty. It still resides on all my old Coco disks (and images). It was titled "DOS/BIN" and when I started my Coco 2 (& 3), I would put in a disk and type LOADM"DOS":EXEC.
Of course after I got heavily into OS9 L2, I rarely went back to basic for anything other than running LYRA or games and since I wasn't a big gamer, that was rare :-)

I also used the rom switch (no copy) on my highly modified version of Rainbow's "CocoDraw" which I modified to access 5 extra pmode 4 screens (under the roms) and "*PAINT" by H. Allen Curtis which allowed CocDraw to paint in 256 colors (dot patterns) and quite a few other mods. I had added "almost" every feature that was in CocoMax II.


Those were the good ol' days :-)

 


Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Contributor, Co-Editor for CocoPedia
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E-Mail: ooogalapasooo at aol.com


 

 

-----Original Message-----
From: Darren A <mechacoco at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sun, Apr 26, 2015 12:23 am
Subject: Re: [Coco] Easy way to copy 40 track disks to the CoCoSDC?


On Sat, Apr 25, 2015 at 9:28 PM, Bill Pierce via Coco
<coco at maltedmedia.com>
wrote:

> Darren, yep, that was a typo on my part :-)
>
So the final correction would be:
>
> *ROM2RAM
> START LDX #$8000
> LOOP CLR
$FFDE
>  LDD ,X
>  CLR $FFDF
>  STD ,X++
>  CMPX #$FEFF
>  BLS LOOP
>  RTS
> 
END
>


Another thing that should be added is to set the interrupt masks
while
copying.  It would not be good for an interrupt to occur while the ALL
RAM
mode is active, but before the portion of ROM containing the service
routine
has been fully copied to RAM.


- Darren

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