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Seeking help on deciphering if this is code that makes sense on a C64 [message #405215] Fri, 05 February 2021 20:18 Go to next message
Anonymous
Karma:
Originally posted by: Sanford Dickert

Hey all -

Long time since I played with a C64 (and this is going back to 1982, mind you).

I have a screenshot of what looks like a dump of binary before starting up in a C64 screen. Have any of you seen something like this? Do you know what the columns mean or what they could be signifying?

I "think" the last column is the value column (8-bits) and the 2-5 columns MAY be the address spec (2+4+4+6) but I can not be sure since I do not know if the emulator will make it work.

And the first column - no clue.

The data is here: http://bit.ly/wvbins01ep05
And the screenshot is here: https://preview.redd.it/yl52isqrtmf61.jpg?width=960&crop =smart&auto=webp&s=c6d5355ad9f50fd84c56a984bcc9f568f 743dbc9

Any help would be very much appreciated!

Thanks!

Sanford
Re: Seeking help on deciphering if this is code that makes sense on a C64 [message #405781 is a reply to message #405215] Wed, 17 February 2021 13:48 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: andy carmony

Imported, from hexadecimal, to an assembler produces this

AND $31,X
ORA #$32
ORA #$35
ORA #$09
AND ($35),Y
ORA #$38
EOR ($0D,X)
ASL
AND $35,X
ORA #$09
ORA #$35
ORA #$31
AND
ORA $320A
EOR ($09,X)
AND
ROL $09,X
WDM
AND
ORA #$36
AND ($0D),Y
ASL
AND
ORA #$33
ORA #$41
ORA #$09
AND ($35),Y
ORA #$43
AND $0D,X
ASL
AND $35,X
ORA #$32
ORA #$43
ORA #$09
AND
ORA #$35
AND
ASL
AND
ORA #$33
ORA #$41
ORA #$09
AND
ORA #$37
AND
ASL
ROL $31,X
ORA #$32
ORA #$35
ORA #$42
ORA #$33
ROL $09,X
SEC
EOR ($0D,X)
ASL
AND
ORA #$33
ORA #$41
ORA #$09
AND
ORA #$38
EOR ($0D,X)
ASL
AND
ORA #$31
ORA #$42
ORA #$34
ORA #$33
AND ($09),Y
EOR ($33,X)
ORA $320A
SEC
ORA #$33
ORA #$09
ORA #$31
AND $09,X
SEC
EOR ($0D,X)
ASL
AND
ORA #$31
ORA #$09
ORA #$31
AND $09,X
ORA $330A
ORA #$32
ORA #$33
ORA #$09
AND ($43),Y
ORA #$35
EOR ($0D,X)
ASL
AND
ORA #$33
ORA #$39
ORA #$30
ORA #$33
ROL $09,X
SEC
EOR $0D
ASL
AND
ORA #$33
ORA #$09
ORA #$31
AND $09,X
ORA $350A
EOR ($09,X)
BMI $10D9
ORA #$09
AND
ORA #$0D
ASL
ROL $42,X
ORA #$32
ORA #$09
ORA #$45
ORA #$0D
ASL
AND
ORA #$32
ORA #$35
ORA #$44
ORA #$32
EOR ($09,X)
SEC
EOR ($0D,X)
ASL
ROL $37,X
ORA #$32
ORA #$37
ORA #$34
ORA #$44
ORA #$42
LSR $0D
ASL
AND
AND
ORA #$09
AND
ORA #$0D
ASL
AND $30,X
ORA #$33
ORA #$43
ORA #$32
ORA #$33
BIT $09,X
EOR
ORA $320A
AND $3209,Y
ORA #$09
ORA #$32
EOR ($09,X)
ORA $370A
AND $09,X
AND
ORA #$09
AND
ORA $330A
EOR ($09,X)
ORA #$09
ORA #$09
BRK
BRK
BRK


Which is junk. Interestingly the 3 BRK's at the end, is the only sequential part.
Re: Seeking help on deciphering if this is code that makes sense on a C64 [message #405790 is a reply to message #405781] Wed, 17 February 2021 17:48 Go to previous messageGo to next message
Andreas Kohlbach is currently offline  Andreas Kohlbach
Messages: 1456
Registered: December 2011
Karma: 0
Senior Member
On Wed, 17 Feb 2021 10:48:59 -0800 (PST), andy carmony wrote:
>
> Imported, from hexadecimal, to an assembler produces this
>
> AND $31,X
> ORA #$32
> ORA #$35

[...]

> Which is junk. Interestingly the 3 BRK's at the end, is the only sequential part.

Already line 3. Why would someone want to OR the accumulator twice
without using the result after the first time?
--
Andreas
Re: Seeking help on deciphering if this is code that makes sense on a C64 [message #405803 is a reply to message #405781] Thu, 18 February 2021 10:35 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: Armin Hierstetter

This for sure is no real assembler code like Andreas already outlined. There is no sense in this code at all.

Is this screenshot taken from a movie?

Chances are that these are just random numbers. If it is taken from a movie then in theory there could be an easter egg to find here but unless there is some "evidence" this is something worth looking into, I would not really waste my time deciphering something where there might be nothing to be deciphered in the first place.
Re: Seeking help on deciphering if this is code that makes sense on a C64 [message #405826 is a reply to message #405803] Fri, 19 February 2021 08:52 Go to previous message
Anonymous
Karma:
Originally posted by: Merman

On Thursday, 18 February 2021 at 15:35:41 UTC, ar...@retroplace.com wrote:
> This for sure is no real assembler code like Andreas already outlined. There is no sense in this code at all.
>
> Is this screenshot taken from a movie?
>
> Chances are that these are just random numbers. If it is taken from a movie then in theory there could be an easter egg to find here but unless there is some "evidence" this is something worth looking into, I would not really waste my time deciphering something where there might be nothing to be deciphered in the first place.

It’s from episode 5 of Wandavision (Disney+).
Vision is working in an office with several C64s. This screen is displayed with modem sounds as the computer connects to the Internet.

For a deeper dive into the scene and the screenshot, watch Robin Harbron’s video on his 8-Bit Show & Tell Channel:

https://www.youtube.com/watch?v=YnTdiQP3nRo
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