83Plus:BCALLs:4F33

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Synopsis

Unofficial Name: SendOSHeader

BCALL Address: 4F33

Sends a header packet, receives acknowledgement and continue, sends acknowledgement and then the 256 bytes at 7A:4000h (the OS header), then receives acknowledgement.

Inputs

  • iy+1Bh set up accordingly

Outputs

  • None

Destroys

Comments

This BCALL will throw ERR:LINK if any problems are found.

A similar BCALL is 4F42, which sends 02h, 0Dh, and the 254 bytes at 7A:4100h instead.

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