[Coco] Easy way to copy 40 track disks to the CoCoSDC?

[Bill Pierce]

Art, I just checked some working code I have that does the rom switch and you are right. The code I posted was reversed.
That means all 4 "Unravelled" (CB, ECB, DECB, SECB) books have typos as I checked all 4 and they all have the same code in the "Memory Map" section. So The correct code would be:

START LDX #$8000
LOOP CLR $FFDE
 LDD ,X
 CLR $FFDF
 STD ,X++
 CMPX #$FFEF
 BLS LOOP
 RTS
 END


 It looks like someone would have caught that long before now.


 


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

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-----Original Message-----
From: Arthur Flexser <flexser at fiu.edu>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sat, Apr 25, 2015 9:58 pm
Subject: Re: [Coco] Easy way to copy 40 track disks to the CoCoSDC?


I would say yes, it's a typo in the book.

Art