[GreenKeys] Model 15 C-64 rate question

[Dave Horsfall]

On Sun, 5 Jul 2015, drlegendre . wrote:

> But setting all that aside, I can't see how the TTY will cope with the 
> character frames sent by the C-64. I see that you are setting 5 DATA 
> bits and 2 STOP bits, but isn't the frame still 8 bits long (including 1 
> START bit)? Isn't the TTY code 5 DATA bits plus 1 each STOP and START, 
> for a total of 7 bits?

You can send as many stop bits as you like; that's the point of start/stop 
bits.

> Seems like they'd fall out of sync after the first character. Last bit 
> of the first character sent from the C-64 would become the first bit of 
> the next character for the TTY, wouldn't it?

Only in synchronous comms (i.e. a clock somewhere); this is async.

-- 
Dave Horsfall  (VK2KFU)  "Those who don't understand security will suffer"
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