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5250 REMOTE EMULATOR CARD
• NRZ/NRZI Encoding: NRZ (Non-Return to Zero) and NRZI
(Non-Return to Zero Inverted) are SDLC transmission-coding options
used to keep synchronization loss between modems to a minimum.
The recom-mended initial setting is NRZI
. This setting must match
that of the host.
• Interrupt Request Level: An IRQ (Interrupt Request) is a control
signal sent by the emulator card to demand the PC’s attention. The
Card supports IRQ levels 3
, 4, 10, 11, and 15. If you’ve installed the
Card in an 8-bit slot, use IRQ 3
or 4. If you’re running Windows,
use IRQ 10
, 11, or 15.
NOTE
PC adapter boards require a unique IRQ level. Make sure the 5250
Remote Emulator Card’s IRQ level is not the same as the IRQ level of
any other board in the same PC.
• DMA Channel 1 and DMA Channel 3: By using DMA (Direct Memory
Access) channels, the 5250 Remote Emulator Card can transmit data
to the host at a higher data rate than 19,200 bps. If you select Disable
,
the 5250 Remote Emulator Card will not operate above 19,200 bps.
NOTE
Both channels should be enabled. Problems might occur if both are
disabled.
• Base I/O Address: This is the Card’s address in the PC’s I/O memory.
The address you select here must match the one you set with the Card’s
DIP switches during the hardware installation (see Section 4.3). Refer
to page 16 for the list of addresses you can choose from.
NOTE
PC adapter boards require a unique I/O address. Make sure the 5250
Remote Emulator Card’s I/O address is not the same as the I/O address
of any other board in the same PC.
• Baud Rate: The data rate at which the Card operates, measured in
bits per second. Selecting Modem
automatically sets the 5250 Remote
Emulator Card to match the data rate of the attached modem. When
you use a null-modem cable, manually select the data rate for the
communications line.
6.3 Advanced Functions
NOTE
If you selected Option 3, Terminal Emulation and PC Support/400, at the
Operating Environment setup screen (see Section 6.1.2), do not change
any Advanced Functions; press [ESC] and skip ahead to Section 6.4.