> From: Jeff Hellige <jhellige(a)earthlink.net>
> Another thing I've noticed with my T/S-1000 and ZX-81 are
> that they seem somewhat picky about what TV's they'll work with.
> I've got a 19" JVC that was made about 10 or so years ago and some of
> the Sinclair's will work fine with it and some won't. They seem to
> prefer older sets. I really should try them with the portable B/W
> Panasonic that is the monitor for my SOL....
Even when you find a TV the TS-1000 like, the RF is usually dirty. Most
cheap, modern B&W sets accept composite input. For fifty cents and 15
minutes time you can a crystal clear display.
Glen
0/0
Hey Doc --
> From: Doc <doc(a)mdrconsult.com>
> Timex Sinclair 1000 - RF output, VHF Channel 2 or 3
> TV, no spade/screw VHS input
> VCR has composite Video In, selected by switch.
>
> I'm not getting any picture at all running a composite cable from the
> Timex to the VCR Video In. Do I need to make a Rat Shack run, or does
> the Timex have a problem?
You can easily tap off the composite video from the wires leading from the
pcb to the RF modulator. If you'd like to buffer the signal, I can send
you a small TIFF with a schematic showing how you can do this with one
resistor and one transistor.
Glen
0/0
Hello!
I'm searching for VS4K Model 90 docs, in BookReader,
PS, PDF, scanned images, or whatever electronic format.
especially wanted:
EK-KA490-SV (service manual)
EK-VAXOG-DK (doc kit)
Thank you in advance,
Rumi
-
Ran across one each of these at a local thrift. Each in original box,
though they have seen some "miles". The TI is a beige case and looks
pretty clean. The Vic20 comes with the cassette drive and both look
like they need a bath.
If anyone is interested in either/both, email me off list and I'll
confirm their availability and price and try to estimate shipping costs.
If they have a bathroom scale there, I can probably come fairly close on
shipping costs given the target Zip code.
- don
> Can't do it. VCR only accepts cable on RF In, and all I have to
>convert the Timex' output is an old video-game input switch with spade &
>screw output.
>
> Looks like a Radio Shack run tomorrow, so let me make certain I know
>what I need. Sounds like something that will switch between CATV input
>and the RF Channel 2 input from the Timex? I might see if Goodwill has
>a $5 B&W TV instead....
What you can use is a "Balun". Its a little adaptor that takes the 300
Ohm spade and screw type connector, and converts it to a 75 Ohm F
connector. Figure about $2 for a balun. They make them in both directions
(screw to F and F to screw) so if your switch only has screw type
connectors on both sides, you can get one for each side to connect it
inline with the antenna in on your TV.
Also, Rat Shack, I believe sells a newer version of that video game
switch. One that will auto switch, and take either the spade and screw
input, or F connector, and will output to an F connector (the F connector
is the standard US screw on cable TV coax connector). However, that will
likely cost you more than a $5 TV. (probably about $20 for the auto
switch game adaptor).
-chris
<http://www.mythtech.net>
Anybody had luck hooking a VAXstation 4000/60 with "GS-2" (?)
graphics adapter up to a VRE01 flatpanel?
I finally got the VS4K from Doc today (thanks for dropping it off,
BTW, hope that mono video cable works for you), and got around to
hooking it up to the VRE a bit ago. However, all is not right - there
looks to be a scan rate/resolution mismatch, and I cant find ANY
dipswitches, etc, to set..
Suggestions? Links to the 4000/60 owners manual possibly?
I've got pictures of the results:
http://gallery.mrbill.net/view_album.php?set_albumName=vre01&page=2
Any help appreciated. I'd LOVE to get this display working..
(and the pictures show the display as yellow - its actually orange..)
Bill
--
Bill Bradford
mrbill(a)mrbill.net
Austin, TX
> OK, I obviously wasn't as clear on the keyboard as I was in my mind.
>
> Timex Sinclair 1000 - RF output, VHF Channel 2 or 3
> TV, no spade/screw VHS input
> VCR has composite Video In, selected by switch.
>
> I'm not getting any picture at all running a composite cable from the
>Timex to the VCR Video In. Do I need to make a Rat Shack run, or does
>the Timex have a problem?
You can't tie a modulated RF signal to a Composite RCA video jack.
Your VCR doesn't have an RF antenna in? (or is that just in use at the
moment). Rat Shack won't have a demodulator (go from RF to line
composite), but they will have A/B switch boxes and baluns (if the timex
has a 300 Ohm two wire lead and you need to go to a F connector). With
that you can share an in use RF Input on the VCR with some other source.
-chris
<http://www.mythtech.net>
OK, I've got the system set up on my 'test bench.' The system powers up
and says:
----------------------------------------------------
ALTOS COMPUTER SYSTEMS
Monitor Version 5.03
Insert Floppy Disk in Drive 1 for Autoload
----------------------------------------------------
Ok, now I insert a disk into drive 1 (which has it's LED on, close the
door, it comes up to speed, and then nothing happens. The drive heads do
not load onto the disk liked they're supposed to. A quick check with my
multimeter reveals that all the PS voltages (including +24V) are pretty
close to their ratings. All the cables are seated securely,
Swapping the drives fixed the problem, and it will now boot 32K Altos CP/M
2.2. Sort of a waste with 208K of RAM, but I guess I'll try to figure out
how to manufacture an MP/M-II BIOS for it, and get it onto a disk.
CP/M-1.4 won't boot, however. It does read OK once I've booted CP/M 2.2,
so it might just be a problem with its first track (it doesn't seek at all
either). Same problem with the 'CP/M diagnostics disk' Any ideas?
I've got a CDC 8" SS drive I got off ebay a few months ago I might try to
use to replace these drives. Does anyone know if it's possible to use
four drives on the system, since the drives have a DS1-DS4?
Also, is there a way to run the diagnostic programs (.DIA files on the
diagnostics disk) without booting from it?
Pretty soon, i'll probably be digging into some CP/M source and attempting
to at least get a 64k version running on here...
Thanks
-- Pat
I'm trying to fix a problem with an RL01 drive;
the drive spins up to speed OK (the scope shows that
sector pulse is within required limits), but
the fault light comes on before the heads move.
The FMPS available at www.mainecoon.com covers
version 1 of the Drive Logic Module, however
I have version 2 (part 54-13531) and the circuit
layout is quite different.
Does anyone have a copy of the FMPS for version 2?
I need to know what causes pin 11 of the 74279
at location E6 to go low. Hopefully the printset
has a comment explaining what this latch does.
I have a second drive working OK on the same controller,
so I believe the controller is OK.
Thanks in advance.
Francis
----
