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Technical Q&AFW 02 - How do I ring the Doorbell? (17-May-1999)
Q: How do I ring the Doorbell? A: Ringing the Doorbell is rather simple, once you have the SBP2 device's fetch agent address. The Doorbell's address is 16 bytes past the fetch agent's address. To ring the Doorbell, you write any value into the Doorbell's address using the You get the address of the fetch agent from the login status notification (because each login could have its own fetch agent, and therefore Doorbell register). Make sure that you register a login status notification function before you log into your SBP2 device; otherwise, you won't get the address of the SBP2 device's fetch agent.
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