[CQ-Contest] Doctor DX clone (if you never used it, you just don't "get it")

[Jack Brindle]

This is not the original author, but a hacker who appears to have extracted the program from the cartridge and posted it on-line.
Thus a red herring…

The code he posted is interesting, and appears to be 6502 code. It is not BASIC. At 175K it will take a while to parse.

73!
Jack, W6FB


> On Oct 1, 2020, at 10:45 AM, Chuck Dietz <w5prchuck at gmail.com> wrote:
> 
> The Short Wave  (TSW)  (4 April 1983 - 17 June 1992)
> 
> 
> Functions :
> Coder, Cracker
> 
> Handle alternative spelling :
> Short Wave
> 
> Handlestory :
> In 1983, I won second and third place in a computer idea competition. I
> bought a C64 from the prize I got, but I didn't have any money on a floppy
> drive anymore because I was a student.
> So, instead of playing games, I focused on programming and tried to make
> music. The latter is rather detailed because I am not a professional
> musician.
> My friend HEU got a lot of user programs and sometimes borrowed a 1541 from
> him.
> I sold the C64 in 1992 and bought an Amiga 500 instead.
> 
> Trivia :
> The Doctor DX program originally came with a cartridge. I implemented this
> in an executable format.
> 
> Country :
> Hungary
> 
> Releases released :
> DownloadDoctor DX ... 1997 Tool
> DownloadMac Music ... 1987 Tool
> 
> Credits :
> DownloadDoctor DX by The Short Wave ... 1997 Tool   (Crack)
> https://csdb.dk/release/download.php?id=223821
> 
> On Thu, Oct 1, 2020 at 12:26 PM Barry W2UP <w2up.co at gmail.com> wrote:
> 
>> In a previous discussion of Dr DX a number of years ago (maybe on this
>> list, maybe elsewhere...), I recall the programmer of Dr DX responded to a
>> post about it.  IIRC, he was a 6-land guy.  Maybe some google and/or list
>> archive searches will find that post, if someone is interested in pursuing
>> it.
>> 
>> Barry W2UP
>> 
>> On Thu, Oct 1, 2020 at 10:57 AM Tim Shoppa <tshoppa at gmail.com> wrote:
>> 
>>> N4ZR asks:
>>>> Does anyone know the identity of the programmer?? Seems that if source
>>>> code were available it should be possible to recompile for Windows
>>>> without too much difficulty.
>>> 
>>> A little like suggesting building a Stradivarius is as simple as finding
>>> Mr. Stradivarius' CAD drawings and running it through a 3-D printer.
>>> 
>>> Pete, this is a Commodore 64 and the source code is certainly 6502
>> Assembly
>>> directly bit-banging on the C64-specific peripherals.
>>> 
>>> The fact that Dr DX achieved so much using stone knives and bear skins as
>>> the base technology makes it a more impressive marvel than a Stradivarius
>>> :-)
>>> 
>>> Rich's original post where he mentions the possibility of a C64 emulator
>>> seems very promising. The paddle/keying would have to be a custom I/O mod
>>> to the C64 emulator but many are modular enough to add simple peripherals
>>> like this.
>>> 
>>> C64's are quite commonly available used and the ROM dump Rich identified
>>> may allow a new cartridge to be burned. Presumably the paddle/keying is
>>> done the simplest way possible.
>>> 
>>> Tim N3QE
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