help upgrading my coco 2

[help upgrading my coco 2]

Ahh ok you need 8 1x64 drams and a 24 pin eprom

[help upgrading my coco 2]

Eprom is 5$ plus 2$ shipping cdn

Post a picture of your coco motherboard

[Coco 2 clicking wont turn on]

Take a old rca wire (like the red white yellow ones)

Cut one end and hook it to the tv .

If it works find or make a adapter.

[Coco 2 clicking wont turn on]

Yes i can be modded for composite or vga..

Make sure all your wires are ok.. nothing loose in the rf box.. .. that your tv tunes to channel 3 or 4 ( make sure coco is one when you scan ypur channels) ..that you connected to vhf not uhf  ( if older set)

Try skipping the nintendo rf and use a rca wire right from the coco to tv in

[help upgrading my coco 2]

Sure , I can make a eprom .. usually 5$  cdn to 2$ shipping..  make sure you have the correct ,model.. right now you should have a 24 pin rom in a 28 pin socket if we are talking about thw correct machine.. do you need ram as well ?

[Coco 2 clicking wont turn on]

After its turned on if you carefully type 

MOTOR ON

then press enter...you should hear a faint click.. if you do the machine is working and its a video

Issue.. check the 3/4 switch.. make sure your tv is on channel 3 or 4 and does not need to rescan

[help upgrading my coco 2]

Your ram upgrade is easy .. only 2 chips to replace and they are not hard to find.. as for the extended basic ( a must have ) there are a few jumpers to solder.. i can provide you with a eprom if needed .. 

If you know someone good at soldering get their help or ..using a fine tip soldering iron do some practice then solder your jumpers

[CoCo 3 Extended BASIC Programs 1-30 on Disk?]

I do have a bunch of rainbow on disk.. but that is also available on the archives..

I writing my first coco3 game.. a graphic adventure game ..with gambling ..dating..lots of fun ..should be ready soon..

[CoCo 3 Extended BASIC Programs 1-30 on Disk?]

From the archive therecare options to dowload a ton if games at once,,so dont do 1 at a time

 

[CoCo 3 Extended BASIC Programs 1-30 on Disk?]

Did you look deep into the archive.. public domain..basic..etc..?

 

 

[Best CoCo Forum?]

On the coco3 hold down f1 then press reset for alternate  artifact colors. , coco1 & 2. Just keep hitting reset at the beginning of game..

[Tandy Color Computer 3 Keyboard Troubleshooting]

No the keyboard does all its connections thru the ribbon cable

 

[Tandy Color Computer 3 Keyboard Troubleshooting]

I would not think every trace is broken .. check with the logic probe  on the connector .. alot should be flashing.. the others should give you a high.

 

[Tandy Color Computer 3 Keyboard Troubleshooting]

Here is what i ended up doing..

 

 

[Tandy Color Computer 3 Keyboard Troubleshooting]

If you look the way it's wired ,,if trace from pin 4 was broken keys. P,q,r,s,t,..w.  would not work.

If trace from 13 was broken ,d,l,t would not work

If you had a basket full of push buttons you could make your own with that diagram

 

[Tandy Color Computer 3 Keyboard Troubleshooting]

This is the kind of tool you need to troubleshoot

Electronics while they are running...

They are under 20$ for a cheap unit

[Tandy Color Computer 3 Keyboard Troubleshooting]

[Tandy Color Computer 3 Keyboard Troubleshooting]

Yes you can buy an improved keyboard from zipster.  Its called a cocomech .

[Tandy Color Computer 3 Keyboard Troubleshooting]

Here is the diagram , including the missing trace (normal) half the pins are outputs from the pua chip and should be pulsing   and the others shouod stay high untill connected wirh a button press.

You need a logic probe with the little flashing lights, they are cheap and easy to use to poke around these machine.. you want to see flashing lights to know something might be working.

With the keyboard disconneced  a small jumperwire from pin 1 to pin 16 would activate a "G"    from pin 2 (Pa1) to pin 12 will get you a ""K"

This will tell you if its a keyboard or chip problem.

[Best CoCo Forum?]

Yes come see us on coco discord.. always very active !

 

[New Coco3 game update]

I'm still hard at work making this game.!

 

[Tandy MC-10 / Alice]

The mc 10 is a cheap hobby computer.. its limited in what it can do.. so people are having fun pushing those limits.. actually making games that are fun.. more memory. Sd card storage etc.. i havevsome . Havent done much with them yet...

[Bought a Tandy color computer bind off Facebook.]

It s nice when the coco has a dust cover.. they are usually so much cleaner internally

And you got the korean coco2 that has real lowercase ..

[Tandy 3200 acquired]

I think it was a sweet score !

[All I want is a monitor]

If you are on a budget annd like to tinker.. alot of modern crts can do rgb with a quick internal mod.. check 8 bit guys youtube for that.. but the onscreen menu of modern crts use rgb !