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- 1-DTR/DSR flow control does not work, I am using a 16650.
-
- The 16650 and similar devices do flow control on chip (in
- hardware) Unfortunately DTR/DSR flow control is not
- supported. One can use a special cable to achieve the
- desired flow control. Simply move the wires for the DTR and
- DSR signals to the RTS and CTS signals at the PC end of the
- cable. Then specify RTS/CTS flow control.
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- 2-Why is the IRQ not show in the Hardware Manager screen.
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- During boot time, the SIO2K driver set does not know the IRQ
- that the serial port is going to use. If the IRQ is
- reported when the IRQ is known (after boot time), then
- resource manager traps. When the IRQ is known at boot time,
- as with PCI devices, the IRQ will be shown in the Hardware
- Manager screen.
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- 3-Why is a message about failing an integrity check being
- displayed.
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- Assuming the drivers have not been otherwise altered, you
- are probably running a disk compression utility. In order
- to use the SIO2K drivers, they must NOT be altered in any
- way, which includes compression.
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- 4-Why is the FIFO depth shown as 1 for a Hayes ESP when the port
- is used in compatibility (16550) mode via uart.sys.
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- The 16550 emulation by the Hayes ESP seems to have a few
- problems. The compatibility mode should be avoided if
- possible, when ESP.SYS is loaded. One of these problems
- causes the probed FIFO depth to show up incorrectly.
- However, once uart.sys has detected a FIFOed device, the
- FIFO size will only be increased, not decreased. Even
- though the probed depth is shown as 1, the 16 byte FIFOs
- (for a 16550) are still used.
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- 5-I am having problems using a Hayes ESP card in compatibility
- mode.
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- Once ANY ESP port has been used in enhanced mode (touched by
- ESP.SYS), power much be cycled before ANY ESP port will
- again work in compatibility mode again.
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- If your are not using ESP.SYS, try forcing a 16450 uart for
- the port in the uart.sys section of sio2k.cfg. If this
- still fails, you should use enhanced mode only, via ESP.SYS.
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- 6-One of my applications complains that the buffers are not large
- enough.
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- Why some people, including some programmers, insist on
- believing in the need for large buffers is beyond this
- writers comprehension. The buffers in the SIO2K drivers are
- sufficiently large enough (and then some) for any
- application to work well.
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