Serial QPC to QL

[tofro]

I think "terminal program" is a good keyword here. And preferably something that uses checksumed blocks for data transfer, like X-Modem or Kermit. Standard QL serial comms is so unreliable that without that you'll likely become desparate.

[Jbizzel]

Thank you guys,

Further notes...

I have no Hermes, only mod is tk2 Minerva

I have no way to put a program on the QL except serial.

Both mdvs work, and I have some blank carts.

You have given me somethings to try. Will report later.

[martyn_hill]

Hi

Just start with Martin's suggestion below - copy directly with COPY 'ser1hz' to 'con_' on the QL to avoid latency waiting for tokenisation - and get a clearer idea of precisely how many characters arrive successfully before things 'hang' (and the

I might suspect your USB to Serial adapter on the host PC were it not for the fact that you've been successful connecting to the Z88 in the past - I myself have had trouble with a number of such adapters in the past which just didn't sufficiently meet the RS232 standards.

If you're likely to need this sort of PC/Emulator to QL connection more in the future, I'd really suggest you take the plunge and build a QLUB Adapter

[Martin_Head]

I'm not too sure about this. But I think when the QL goes busy, It expects the sender to stop immediately. If any more data arrives, you get problems.

I don't know if your USB to serial adaptor has any kind of congifuration program. But if it does, look for something that stops transmission as soon as the receiver goes busy. I don't know what it might be called.

[Jbizzel]

Using the copy to CON idea, it seems that it is getting stuck at the buffer.

Which is about line 88 in the original code I was trying to copy

The buffering appears to be pretty visible using this method, even when copying a file on the harddrive to CON.

(I have just received a qubide, which opens up my options considerably.)

[janbredenbeek]

Hi Jbizzel,

It's best to install the RAM disk driver and copy to ram1_ first, then to storage media.
The QL cannot handle serial and storage I/O at the same time, and serial buffering is limited to just 81 bytes. The con_ driver is also quite slow.
For reliable transfers you can use SERnet or QTPI terminal emulator with Zmodem transfer.

[martyn_hill]

Hi again Jbizzel!

Using the copy to CON idea, it seems that it is getting stuck at the buffer.
Which is about line 88 in the original code I was trying to copy

And how many characters would you say those 88 lines represent?

[Jbizzel]

Hi Martin,


it happens to be....

1986.