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gaos's Introduction

Hi there! ๐Ÿ‘‹

I'm Moldytzu and welcome to my profile! I am a self-taught programmer from an eastern european country named Romania. I like C and x86 assembly.

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gaos's Issues

Different port for second byte of divisor

arch_pio_write8(COM_PORT_BASE + 0, divisor >> 8); // in two writes

Should that be PORT + 1 instead?

OSDev lists the setup as follows:

To set the divisor to the controller:
Set the most significant bit of the Line Control Register. This is the DLAB bit, and allows access to the divisor registers.
Send the least significant byte of the divisor value to [PORT + 0].
Send the most significant byte of the divisor value to [PORT + 1].
Clear the most significant bit of the Line Control Register.

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