In which direction to dig about the entrances and exits?

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grenders22
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Joined: Thu Mar 01, 2018 10:09 am

In which direction to dig about the entrances and exits?

Post by grenders22 »

Function Code: 0x4F00
Input: AX = 0x4F00
ES: DI
Output: AX = 0x004F

Please help with the implementation, or tell me which way to dig in order to program something higher.
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Brendan
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Re: In which direction to dig about the entrances and exits?

Post by Brendan »

Hi,
grenders22 wrote:Function Code: 0x4F00
Input: AX = 0x4F00
ES: DI
Output: AX = 0x004F

Please help with the implementation, or tell me which way to dig in order to program something higher.
May we make random assumptions; like maybe you're talking about this BIOS function (and not a Linux system call or anything else), and that the function call worked (output ah = 0x00 = "success"), and that you're implementing code the uses VBE (and not implementing your own video card ROM)?

If we can make these random assumptions; I still don't know what you need help with.


Cheers,

Brendan
For all things; perfection is, and will always remain, impossible to achieve in practice. However; by striving for perfection we create things that are as perfect as practically possible. Let the pursuit of perfection be our guide.
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