exxos's Atari, Amiga & retro forum

PaulJ wrote: 15 Apr 2019 23:30 I'm confused Icky. You have the jumper going to pin 5 of the sip. If you check with an meter pin 27 of the IDE connector goes to pin 6 of the sip through a hundred owns. Pin 1 of the sip which is power is on the top of the picture. Pin 6 is the one with the trace cut to the right of the pin 6???

PaulJ wrote: 15 Apr 2019 23:32 Its pin 5 counted from either end of the sip.

I think I see your confusion PaulJ. I think you may of seen an issue with my patch.

Icky wrote: 16 Apr 2019 00:00

PaulJ wrote: 15 Apr 2019 23:30 I'm confused Icky. You have the jumper going to pin 5 of the sip. If you check with an meter pin 27 of the IDE connector goes to pin 6 of the sip through a hundred owns. Pin 1 of the sip which is power is on the top of the picture. Pin 6 is the one with the trace cut to the right of the pin 6???

PaulJ wrote: 15 Apr 2019 23:32 Its pin 5 counted from either end of the sip.

I think I see your confusion PaulJ. I think you may of seen an issue with my patch.

Well done PaulJ for finding the first bug on the DEV board. I have the patch of the IORDY line on the wrong pin of the SIL Resistor.

The IORDY line should be patched one pin down to Pin 6 of the SIL Resistor. See fixed image of patch below. I will update the original Patch image.

Icky wrote: 16 Apr 2019 00:00

PaulJ wrote: 15 Apr 2019 23:30 I'm confused Icky. You have the jumper going to pin 5 of the sip. If you check with an meter pin 27 of the IDE connector goes to pin 6 of the sip through a hundred owns. Pin 1 of the sip which is power is on the top of the picture. Pin 6 is the one with the trace cut to the right of the pin 6???

PaulJ wrote: 15 Apr 2019 23:32 Its pin 5 counted from either end of the sip.

I think I see your confusion PaulJ. I think you may of seen an issue with my patch.

Yes, either the new schematic is wrong or your patch. Get some sleep, must be mid night there. I'll look at it some more but here's the issue. New schematic shows IORDY coming in on IDE pin 27 goes through R7 an 100 ohm resister, to pin 6 of RN4, then to pin 64 of the plcc. You have PLCC pin 64 jumper to pin 5 of RN4. Has to be because its pin 5 no matter which end you start from. :) So according to the schematics you IORDY from the PLCC connected to TMS which also connects to PLCC pin 23... So get some sleep.. go to work.. :) and I'll connect with ya tomorrow. :) :) :) :) I'll see what I can figure out. :) :) :)

Icky wrote: 16 Apr 2019 00:10 The IORDY line should be patched one pin down to Pin 6 of the SIL Resistor. See fixed image of patch below. I will update the original Patch image.

Ah so, TMS was shorting to IORDY then ?

exxos wrote: 16 Apr 2019 00:19

Icky wrote: 16 Apr 2019 00:10 The IORDY line should be patched one pin down to Pin 6 of the SIL Resistor. See fixed image of patch below. I will update the original Patch image.

Ah so, TMS was shorting to IORDY then ?

Correct- Good spot by PaulJ.

Icky wrote: 16 Apr 2019 00:21

exxos wrote: 16 Apr 2019 00:19

Ah so, TMS was shorting to IORDY then ?

Correct- Good spot by PaulJ.

ah :lol: I guess it never became a issue as the CF & JTAG wouldn't ever be going at the same time.. just goes to show how something can be wrong and still work fine :lol:

@PaulJ - good find! and yes is 00:25 here.. only the hardcore people are still online 8-) Right I'm off then! :lol:

Icky wrote: 16 Apr 2019 00:10

Icky wrote: 16 Apr 2019 00:00



I think I see your confusion PaulJ. I think you may of seen an issue with my patch.

Well done PaulJ for finding the first bug on the DEV board. I have the patch of the IORDY line on the wrong pin of the SIL Resistor.

The IORDY line should be patched one pin down to Pin 6 of the SIL Resistor. See fixed image of patch below. I will update the original Patch image.


IMG_3735.jpg

Ahh, that looks more like what I expect.. I still don't work but it makes sense now. :) :) :)

PaulJ wrote: 16 Apr 2019 00:26

Icky wrote: 16 Apr 2019 00:10

Well done PaulJ for finding the first bug on the DEV board. I have the patch of the IORDY line on the wrong pin of the SIL Resistor.

The IORDY line should be patched one pin down to Pin 6 of the SIL Resistor. See fixed image of patch below. I will update the original Patch image.


IMG_3735.jpg

Ahh, that looks more like what I expect.. I still don't work but it makes sense now. :) :) :)

MOD#1 Photo instructions updated for correct patch. Need to go and check latest version of schematic etc that this is all correct for when we do the next version.

Thanks PaulJ. This is why we need BETA Testers

Will re patch mine as soon as I can, good work guys.

This came today...

I somehow think there is a "icky sticker invasion" going on somewhere...