Prototype Atari PCB made!

Post by **gannon** » Sun May 01, 2005 4:28 pm

Part        Value          Device        Package   Library                 Sheet

6507                       DIL28         DIL28-6   ic-package              1
6532                       DIL40         DIL40     ic-package              1
TIA                        DIL40         DIL40     ic-package              1
C1          .22uF          C2,5-3        C2.5-3    capacitor-wima          1
C2          10pF           C2,5-3        C2.5-3    capacitor-wima          1
C3          4.7uF          C2,5-3        C2.5-3    capacitor-wima          1
C4          .1uF           C2,5-3        C2.5-3    capacitor-wima          1
C5          .1uF           C2,5-3        C2.5-3    capacitor-wima          1
C6          .1uF           C2,5-3        C2.5-3    capacitor-wima          1
C7          .1uF           C2,5-3        C2.5-3    capacitor-wima          1
C8          .1uF           C2,5-3        C2.5-3    capacitor-wima          1
D1          1N914          1N914         DO35-10   diode                   1
D2          1N914          1N914         DO35-10   diode                   1
D3          1N914          1N914         DO35-10   diode                   1
IC1         7805T          7805          TO220H    linear                  1
Q1          2N3906         2N3906        TO92D     transistor-small-signal 1
Q2          2N3906         2N3906        TO92D     transistor-small-signal 1
Q3          3.579575Mhz    CRYTALHC18U-H HC18U-H   crystal                 1
R1          500K           TRIM_US-B25P  B25P      pot                     1
R3          4.7K           R-US_0204/5   0204/5    rcl                     1
R4          1K             R-US_0204/5   0204/5    rcl                     1
R5          220            R-US_0204/5   0204/5    rcl                     1
R6          91             R-US_0204/5   0204/5    rcl                     1
R7          2.2K           R-US_0204/5   0204/5    rcl                     1
R8          220            R-US_0204/5   0204/5    rcl                     1
R9          240            R-US_0204/5   0204/5    rcl                     1
R10         100            R-US_0204/5   0204/5    rcl                     1
R11         12K            R-US_0204/5   0204/5    rcl                     1
R12         1000K          R-US_0204/5   0204/5    rcl                     1
R13         100K           R-US_0204/5   0204/5    rcl                     1
R28         100            R-US_0204/5   0204/5    rcl                     1
R29         100            R-US_0204/5   0204/5    rcl                     1
R30         1K             R-US_0204/5   0204/5    rcl                     1
R31         4.7K           R-US_0204/5   0204/5    rcl                     1
S1                         255SB         255SB     spdt switch             1
X1                         SCD-014A      SCD-014-A con-shiua-chyuan        1

maddox · Post by **maddox** » Sun May 01, 2005 5:30 pm

cool, thank you gannon.

I think most of the parts i will find on the Atari PCB.

btw.: is it for PAL or NTSC output ?

Post by **gannon** » Sun May 01, 2005 5:45 pm

If I remember right pal and ntsc is only decided by the tia version. Not sure though.

maddox · Post by **maddox** » Sun May 01, 2005 5:49 pm

yeah TIA and maybe a Chrystal.

vb_master · Post by **vb_master** » Sun May 01, 2005 7:42 pm

So... Gerber file?

BTW, is the board small enough if I wanted to use the Radio Shack PC Board Kit?

Self answer - yes.

So gannon, could you supply a mirror PNG image (in the correct size, with lines around the board so we know where to cut) of the traces so we could make our own boards?

Post by **Sparkfist** » Sun May 01, 2005 8:06 pm

Looks like we have a new standard for the size of the VCSp. And Gannon hope you can keep up with supply once AA members hear of this.

maddox · Post by **maddox** » Sun May 01, 2005 9:40 pm

3.579575 Mhz crystal = NTSC
4.433619 Mhz crystal = PAL

original found in the Phoenix-blog
I found that by tapping or holding something metallic against the crystals on the screen (oval metal cans in left photo) the unit turned on with color just fine. From my limited knowledge of TV I know the 3.579545 MHZ cystal is the NTSC clock for generating a signal (I think it's heavily involved with color, if I'm wrong please correct me) Anyway the Atari has a crystal of the same frequency on it.

(Note: The 4.433619 MHZ crystal seen on the screen is for PAL, which the screen can also take as input)

EDIT

X1 SCD-014A SCD-014-A con-shiua-chyuan 1

could you please explain which part this is ?

Post by **gannon** » Sun May 01, 2005 9:51 pm

It's the dc jack. I used a modified one from a NOAC for my prototype.

maddox · Post by **maddox** » Sun May 01, 2005 9:56 pm

lol

just a freaky dc-jack. ok, fine thanx again.

Post by **gannon** » Mon May 02, 2005 10:04 am

maddox wrote:3.579575 Mhz crystal = NTSC
4.433619 Mhz crystal = PAL

original found in the Phoenix-blog
I found that by tapping or holding something metallic against the crystals on the screen (oval metal cans in left photo) the unit turned on with color just fine. From my limited knowledge of TV I know the 3.579545 MHZ cystal is the NTSC clock for generating a signal (I think it's heavily involved with color, if I'm wrong please correct me) Anyway the Atari has a crystal of the same frequency on it.

(Note: The 4.433619 MHZ crystal seen on the screen is for PAL, which the screen can also take as input)

I checked out the PAL atari schematics, and my pcb won't work for it. Ends up the only difference is the TIA and the PAL clock, but the console still runs on the 3.579575Mhz frequency, so it requires 2 clock circuits. Also, the pinout for the TIA is different.
I guess I could make a pcb design for it still if I have any extra time though.

Nightmare · Post by **Nightmare** » Mon May 02, 2005 11:06 am

Does this thing work anyway? I hope so...

ILL BE BUYING ONE FOR MY FIRST PORTABLE

I dont even play atari but hey!

maddox · Post by **maddox** » Mon May 02, 2005 11:37 am

yeees gannon,

do "The PAL". Go for it, go for it . . .

HK-47 · Post by **HK-47** » Mon May 02, 2005 12:58 pm

Could you go ahead and email me the eagle file.

It would be really nice of you. And I wont post any pics if you dont want. Also, this board uses the cd4050 mod right? So this thing wont work for psone screens? Or does this use bens new video mod?

Post by **gannon** » Mon May 02, 2005 1:17 pm

It has headers directly connected to the video pins of the TIA, so you can use any video mod you want

MM007 · Post by **MM007** » Mon May 02, 2005 1:24 pm

Which kind of Video mod does this use?