User`s guide

56K Professional Message Modem 69

S13 0 Bit-mapped register. Select the bit(s) you want on and set

S13 to the total of the values in the Value column. For

example, ATS13 = 17 enables bit 0 (value is 1) and bit 4

(value is 16).

Bit Value Result

0 1 Reset when DTR drops

1 2 Reset non-MNP transmit buffer from

1.5K to 128 bytes*

2 4 Set backspace key to delete

3 8 On DTR signal, auto dial the number

stored in NVRAM at position 0

4 16 At power on/reset, Auto Dial the

number stored in NVRAM at

position 0

5 32 Reserved

6 64 Disable quick retrains

7 128 Disconnect on escape code

* The 1.5K-byte non-ARQ buffer allows data transfer with Xmodem-

and Ymodem-type file transfer protocols without using flow

control.

The 128-byte option lets remote users with slower modems keep

data you’re sending from scrolling off their screens. When

remote users send your computer an XOFF (Ctrl-S) and you stop

transmitting, the data in transit from your modem’s buffer doesn’t

exceed the size of their screen. This is also very helpful in

situations when a remote modem/printer application is losing

characters.