1200XL Owners Club (serial tracker)

[1200XL Owners Club (serial tracker)]

Hi,

I'm from Poland, S/N of my 1200XL : 83S DA 008733. Other no. 153, I think that is 15 week of 1983. 

Regards

eightbitter

 

[XMAS AVGCART Giveaway]

On 12/18/2019 at 4:49 PM, eightbitter said:

Merry X-mas 

12182019

On 12/18/2019 at 4:49 PM, eightbitter said:

 

   -

 

[XMAS AVGCART Giveaway]

 

 

[Percom RFD-40S1 ROM 'CSL 2.3 RFD']

Hi all,

I'm looking for RFD-40S1 owners manual.

 

eightbitter

[RGB in 5200]

VBXE5200 is accessible here: http://www.apple2gs.republika.pl/VBXE5200.rar

[RGB in 5200]

Hi all

Here you are attached necessary files to make VBXE inXL/XE/5200

 

[RGB in 5200]

rayik, drop me email directly to dereatari(nospam)op(dot)pl, then I can send you all files about VBXE5200. Other guys who're interessed them too

[Atari 5200 System Reset Possible?]

I do not think this is the correct solution, because to short the output to ground. It is better to connect as shown below in circle.

http://www.dereatari.republika.pl/Reset5200.gif

[Cartridge labels to replace]

When I bought i.e. 5200 console not working and repair it, then is OK? Or when I replace bad rom into cartridge to eprom? Why I can't repair or replace label of my cartridge?

[Cartridge labels to replace]

Hi all,

Has anyone considered the possibility to print new labels on the cartridges that have been damaged, worn or lost? Especially Parker Brothers made are misery​​. I have in my collection a lot of these carts. I do not have the ability to graphics, maybe someone has some ready-made designs and can put them on the net? Not for free, of course ...

[disassembly (particularly i8040) MCS48 architecture]

Bump

phaeron, have you any good news?

Jerzy

[How big is your 5200 collection?]

_{I have 3 2-ports and 2 4-ports consoles, many gadgets, controllers and about 140 (5200 only) cartridges (60 different titles).}

[2600 Adapter with the Starpath Supercharger!]

It's not surprising. 2600 adapter is a whole console 2600 without a PSU and RF cord.

[5200 - possible RF module problem]

Repair broken track or replace GTIA or ANTIC .

I think that you should carefully check middle pins of VR1 and VR2 whether any broken or bad contact with GND (without supply!). Disconnection this pin causes the appearance 7.5V instead 5V on output. It's hard to find when you don't know about it.

[5200 - possible RF module problem]

Lorne, clean cartridge socket and cartridge edge connector and try again. If no picture or no black screen - disassemble console by remove top cover and top metalic shield. Insert cartridge to socket (in proper position) and connect console, PSU and TV to switch. Turn on the console and check voltage on pin 3 of RF modulator and both pins of L13, should be 5V. In many cases console not starts when cartridge connectors are dirty.

[5200 - possible RF module problem]

Are you sure that 4116 are proper RAM chips? In 5200 should be 4516 single voltage (5V only) chips. 4116 require dual voltage 5 and 12Volts.

[5200 expansion port?]

There command line is missing, so only datasette can be connected, or Supercharger thru 2600 module.

[RGB in 5200]

VBXE new issue preorder: http://www.atariage.com/forums/topic/190603-vbxe-pre-order-thread/

[Sad PENGO]

The effects caused by damage GTIA can appear in some games only, others work OK. Replace GTIA and Pengo should work properly.

[Atari 5200 Zero RAM DRAM Test (Find Bad RAM ICs)]

I don't have a schematic of the 2-port model handy to see if they have different PCB markings.

 

on board 2-port models chips are marked Axx, RAM: A18(D7) to A25(D0).

[Atari 5200 Zero RAM DRAM Test (Find Bad RAM ICs)]

I don't have a schematic of the 2-port model handy to see if they have different PCB markings.

 

On 2-port model chips are marked Axx. RAM chips are from A18(D7) to A25(D0).

[I have a broken Atari 5200 :(]

Here you are power scheme of the console 5200 2-port. At the bottom you see two squares, the two parts of IC CD4013, which switch on and off the power. Pressing monostable switch S2 causes the transistor Q7 is open or not. When is open - the voltage of 5V is stabilized by the stabilizer VR2 and indicator lights. Now are powered logic circuits (ANTIC, GTIA, CPU and ROM). Cartridge shorts two contacts CI1 and CI2, open transistor Q6 and VR1 stabilizes the voltage. Supplied are POKEY, RAM, TTL, and video circuits. The console starts.

It is sufficient to measure the voltage on modulator (powered by VR2) and any TTL chip (powered by VR1) to make sure that console is powered. You can also check the presence of voltage on the other chips to make sure that there is no interruption in the supply circuit.

[I have a broken Atari 5200 :(]

Yes, correct original position. Excuse me for misunderstandig, in some cases I use Google translator, because english is not my native language and I have difficulties in language dezinvoltures and nuances

[I have a broken Atari 5200 :(]

Disassemble the console, remove the top RF shield, bottom leave. Remove and reinsert in right positon all chips in sockets. Clean contacts of cartridge, look into cart socket and remove all clips or other metalic intrusions (do not remove gold contacts! ;o). Connect the power supply, RF cable to TV, insert the cartridge and turn on the console. Set the multimeter to 20V DC range and check voltage on pins of chips: for example 74LS139: pin 8 is GND (-), pin 16 is VCC (+) or the RAM 4516 VCC pin 8, pin 16 GND. Next check RF modulator: pin 1 GND, pin 3 VCC. Mulimeter should show ca 5V DC. As GND you can use large metalic track around board.

Next check temperature of chips, should be slightly warm, more warm can be CPU (CO14806) and ANTIC (CO12296). Warm chips of RAM 4516 (CO18082) should be replaced.

Big 40pin chips rarely are damaged.

[I have a broken Atari 5200 :(]

Check supply voltage. Should be 5V ±5% at output pins of both 7805. Very often corrupts the memory. Check if not warm any of the RAM chips and replace them. Try replace all RAMs for the same type. I once met a faulty circuit 74LS139.