DOS ain't dead

VERIFY reimplementation (Announce)

posted by Guti , 14.09.2022, 09:11

I am not sure if it could be useful for anyone, but I have just reimplemented VERIFY.COM by Peter Mikalajunas -1995- (https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/verify/) in pure assembler. It is not a big deal, but was a personal challenge. With this main .COM executable gets reduced from 5,444 bytes to just 653 bytes.

Also I noticed that "original" VERIFY was not compatible with the internal command, allowing only /ON or /OFF. My implementation works with ON and OFF, but also with 1 or 0.

Source code and binaries are available at: https://sourceforge.net/projects/nikkhokkho/files/VERIFY/


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Javier Gutiérrez Chamorro
https://www.javiergutierrezchamorro.com

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Visit my personal blog at https://www.javiergutierrezchamorro.com

Complete thread:

• VERIFY reimplementation - Guti, 14.09.2022, 09:11 (Announce)
  • VERIFY reimplementation - rr, 14.09.2022, 20:48
    • VERIFY reimplementation - Guti, 15.09.2022, 06:28
  • VERIFY reimplementation - glennmcc, 14.09.2022, 21:26
    • VERIFY reimplementation - rr, 14.09.2022, 22:00
      • VERIFY reimplementation - glennmcc, 14.09.2022, 22:21
    • VERIFY reimplementation - Guti, 15.09.2022, 06:29