home *** CD-ROM | disk | FTP | other *** search
- Date: Sun 19 Oct 86 23:53:34-EDT
- From: Mike Chepponis <cadre!C.CS.CMU.EDU!Michael.Chepponis@pitt.UUCP>
- Subject: a couple of things.
-
- Firstly, tnx for the experimentation - really needed! Too bad you're not in
- Pgh!
-
- As for kiss in a single ROM, that is the the ultimate goal, but I am unwilling
- to do that until I believe the code is bug-free. I don't know why it happens,
- but about 1% of the packet are corrupted with extra characters;;; I'm working
- very hard trying to figure this out! But, as I said, it should be usable as
- it sits.
-
- As for funny sounding packets, the easiest thing to do is generate a simple C
- program to drive a serial port with SLIP' frames, and send out AX.25 UI frames.
- That way, you can monitor them on a regular TNC. I did this, and the audio
- sounds OK to me; Be sure you send your txdelay appropriately - you might have
- to make it longer for the kiss TNC (use the appropriate frame type). And, if
- you are seeing the CON LED come on, then the TNC is sending a valid frame to
- the host, and if you are not seeing it, there is some problem with the host
- software. You may want to hack together a simple monitor to see what KISS is
- seeing - I've done that, and I watch 145.01 here.
-
- As a hack, I took the info you gave me about when you were having trouble
- before you cut JMP6. I think I have a ROM version that does not require you
- to cut JMP6... It relies on the fact that when the address 0000 is being output
- for the first opcode fetch, you said it returns an FF, which is RST 7 (call to
- loc 0x38). So, I hacked the code to do only references to 0x4000 and above
- and to insert a JP 4000h at "4038h" - since an 8k ROM only goes to 3fffh, there
- is address wrap-around, but by forcing A14 on, you don't have to do anything
- special to the JMP6! At least, it worked for me! Here's v.3 of downloader
- code. Try it with JMP6 connected, let me know if it works for you, too,
- because if it does, this is the version of the downloader I should distribute!
-
- (working my buns off, really!) -Mike
-
-