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UnLock Software*SOLVED*

Posted: Sun Jul 07, 2019 9:56 pm
by butchi
Hi,
ZX software that auto-runs, after loading, has more of a chance to fail.
Q: Can auto-run code be unlocked in some way, so only the binary gets installed without it being launched :?:
b

Re: UnLock Software

Posted: Sun Jul 07, 2019 10:33 pm
by XavSnap
:?
On VB81, press the "Esc" key… it's an ASM exit key, to list the ASM code.

On a true ZX81, you had to poke something before loading.
Don't remember… it had to read my docs….

Re: UnLock Software

Posted: Sun Jul 07, 2019 10:46 pm
by mrtinb
If you have a ZXpand, you can load the software with LOAD “SOFTWARE STOP ”, where STOP is a keyword. ZXpand emulation is available on EightyOne as well.

If you have real hardware with tape loading, I’ve read you can load with RAND USR 836 to stop auto-run. (This I’ve never tried myself.)

Re: UnLock Software

Posted: Sun Jul 07, 2019 10:50 pm
by Fruitcake
mrtinb wrote:
Sun Jul 07, 2019 10:46 pm
If you have real hardware with tape loading, I’ve read you can load with RAND USR 836 to stop auto-run. (This I’ve never tried myself.)
This works but must be run in FAST mode.

Re: UnLock Software

Posted: Mon Jul 08, 2019 1:25 am
by XavSnap
Got it !

Hebdogiciel #87 page 9 [Bidouille Grenouille]:
https://www.abandonware-magazines.org/a ... &album=oui

Type:
FAST
RAND USR 836

(loading…)
LIST

:ugeek:

Thanks Martin & Fruitcake.

Re: UnLock Software

Posted: Mon Jul 08, 2019 2:22 am
by butchi
mrtinb wrote:
Sun Jul 07, 2019 10:46 pm
If you have a ZXpand, you can load the software with LOAD “SOFTWARE STOP ”, where STOP is a keyword. ZXpand emulation is available on EightyOne as well.

If you have real hardware with tape loading, I’ve read you can load with RAND USR 836 to stop auto-run. (This I’ve never tried myself.)
mrtinb,
This ZXpand manual has NO dialog on adding ' STOP ', when LOADing:
http://www.rwapsoftware.co.uk/DOC/ZXpand%20Manual.pdf
What's your reference?
b
* attached >16K auto-run code *

Re: UnLock Software

Posted: Mon Jul 08, 2019 5:05 am
by mrtinb

Re: UnLock Software

Posted: Mon Jul 08, 2019 7:06 pm
by dr beep
I don’t think you can break into my 1K games.
Simply because (especially the latest) the games don’t make a listing in BASIC.

Re: UnLock Software

Posted: Mon Jul 08, 2019 8:07 pm
by butchi
mrtinb,
ZXpand did the job, thx!
Now, the attached >16K file ZXpand SAVEd, will not LOAD via EO tape, only ZXpand CAT.
What's the trick to get EO tape/wav to LOAD it, as well :?:
b
* how many P standards exist *

Re: UnLock Software

Posted: Mon Jul 08, 2019 9:29 pm
by XavSnap
* how many P standards exist *
In fact, two 'P' files can be generated from a tape.
-1) The standard 'P" file from "Xtender": it's the memory snap from $4009/16393 (Version tag) to the Vars top.
-2) The second format (the pur format) is a 'p" file with the name header, generated with SAVE"HELLOWORLD" command.
(the "81" extension)

Emulators use to rename "81" to "P" files, and trim the name header "MYPROGNAMe"+"P file"... and ignore its name. The name will be the DOS name.

'81' format: NAMe+RAM SNAP (Pure tape signal)
'P' format : RAM memory dump.