NETOPRDW@ncsuvm.ncsu.edu (08/14/90)
I have a Kaypro 4, 1983 model and a 2400 Baud modem. My problem is, at 2400 baud, it tends to drop characters. Thus: Enter username> becomes Etsernme> Is this a problem of software or hardware? How do I solve this problem? I have this difficulty with MODEM7+, YAMKAP, and CP4KPR. It is silly to have to use 1200 baud when I can go much faster.
zlraa@iceman.jcu.oz (Ross Alford) (08/14/90)
> I have a Kaypro 4, 1983 model and a 2400 Baud modem. My problem is, at > 2400 baud, it tends to drop characters. I also have an '83 series Kaypro 4. It seems to cope just fine with terminal emulation using MEX at up to 4800 baud, if my memory serves me right. Now that I think about it, though, that may be because I doubled the clock speed using the Micro Cornucopia hardware mod some years ago, so it runs at 5 Mhz. Many old Kaypros have had this or a similar mod done, but if yours hasn't that could be one solution to the problem. You could also try getting an interrupt-driven terminal emulator. There is at least one on SIMTEL20, in the PD1:<CPM.KAYPRO> (might be wrong about it being PD1, could be PD2?) directory. Micro Cornucopia used to sell one on one of their disks, but since they seem to have gone out of business, I guess that is no longer a viable source. Ross Alford zlraa@marlin.jcu.edu.au
m1tca00@macs2.FRB.GOV (Thomas C. Allard) (08/16/90)
In article <90225.204141NETOPRDW@ncsuvm.ncsu.edu>, NETOPRDW@ncsuvm.ncsu.edu writes: |> |> I have a Kaypro 4, 1983 model and a 2400 Baud modem. My problem is, at |>2400 baud, it tends to drop characters. |>Thus: |> |>Enter username> |> |>becomes |> |>Etsernme> |> |>Is this a problem of software or hardware? How do I solve this problem? |>I have this difficulty with MODEM7+, YAMKAP, and CP4KPR. |> |>It is silly to have to use 1200 baud when I can go much faster. Make sure that your 25th status line is off. When it is on the machine has to redraw the screen when scrolling and doesn't have time to keep up. I think the sequence is ESC-C-7.
etrmg@levels.sait.edu.au (08/16/90)
In article <90225.204141NETOPRDW@ncsuvm.ncsu.edu>, NETOPRDW@ncsuvm.ncsu.edu writes: > > I have a Kaypro 4, 1983 model and a 2400 Baud modem. My problem is, at > 2400 baud, it tends to drop characters. > Thus: > > Enter username> > > becomes > > Etsernme> I am well aware of how this makes you feel. . . > Is this a problem of software or hardware? It's a hardware problem. > How do I solve this problem? Get in touch with the people at Microcornucopia Magazine in Bend, OR. They offered a complete range of new monitor ROMs that use advanced video command sequences. This would allow the Z80 to do less video housekeeping (ie. more character buffering) and you'll get to keep your current setup. > I have this difficulty with MODEM7+, YAMKAP, and CP4KPR. I have it with ZMP, Kermit, and MDM730 (basically everything serial!) > It is silly to have to use 1200 baud when I can go much faster. Tell me about it! I hear the '84 series (mine) with graphics is even slower hence my knowledge about this. I can't even go 1200 with my Hayes without nulls on the BBS I'm calling! Unfortunately, nowadays, nobody needs nulls (but me!!!) My MOD involved a new ROM (PRO-MAX884 = $79.00 US) and a 2MHz 68B45 chip from Motorola. No worries at all. Works beautifully! Even gives me current time & date on the 25th line (status line) CONSTANTLY! VT52 Terminal emulation (H89, etc.) and Screen dump, & much more. (ZCPR in ROM) If you want an address or a few more references to articles in uC, let me know by email. Good luck . . . . Ronn
NETOPRDW@ncsuvm.ncsu.edu (08/16/90)
Thanks for the info. I am still running at 2.5MHz, does anyone know If I can get a clock speed upgrade to 5 or 8 MHz? and If so, from where and how much It will cost me? -------------------------------------------------------------------------- Monty: You're SURE you finished? | BITNET:NETOPRDW AT NCSUVM Gadget: Sure I'm sure. | internet:netoprdw@ncsuvm.ncsu.edu Monty: Not like the Last time? |_____________________________________ Gadget: Oh, Monty, How many times can the wings fall off a plane?
etrmg@levels.sait.edu.au (08/17/90)
In article <90227.211956NETOPRDW@ncsuvm.ncsu.edu>, NETOPRDW@ncsuvm.ncsu.edu writes: > Thanks for the info. I am still running at 2.5MHz, does anyone know > If I can get a clock speed upgrade to 5 or 8 MHz? and If so, from where > and how much It will cost me? > -------------------------------------------------------------------------- > Monty: You're SURE you finished? | BITNET:NETOPRDW AT NCSUVM > Gadget: Sure I'm sure. | internet:netoprdw@ncsuvm.ncsu.edu > Monty: Not like the Last time? |_____________________________________ > Gadget: Oh, Monty, How many times can the wings fall off a plane? You may find all the info you need in a few old issues of MicroCornucopia. Give them a ring at 503-382-5060 Someone may answer still (if you're lucky) and then you can order the right issues. Alternatively, you could send something to POB 223; Bend, Oregon 97709. I know uC is out of business, but you may still get in touch (Dave Thompson is a great guy) Also, you could contact Microsphere in Bend too. Dave's bro runs it & is still in business. 503-388-1194 (Beware, these numbers are from a 1985 issue so don't get mad if they aren't correct) Of course if all this fails, send me your address and I'll send you some copies of the pertinent articles. They had Ram disks and video mods too so check it out! See you. Ronn