Steve Rieck's latest activity
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.Couple things - now grounding the scope on pin 3 of the PDS slot for a shorter ground cable. No difference really. The NMI switch has... -
Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.interesting. Thank you so much for your help! I'm gonna check out all of this tomorrow.
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.Yep.. i've got square waves on the C3 and E clocks from the GLUE.... photos respectively
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.Here is what Y1 for example looks like on the scope. The frequency looks correct but it's definitely not a square wave. I assume it is...
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.that's a great point. I do remember seeing that in the video. It's on one of the video pals I recall. When I was previously working on...
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.clipping the ground to the big metal whatchamacallit down there by the ports.
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.unfortunately getting the same trashy signal. so I think this clearly indicates something more serious than a bad ram diode or UH7 pal...
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.The data line signals on the video ROM and video RAM get this mess instead of nice square waves... I think it's a bad glue chip or maybe...
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.yep sure did. Under the scope the whole reset circuit looks correct. 5 V to 0v
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.Just went through every single pin for every single address and data line per the schematic redraw matrixes.... exhausting. Everything...
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Steve Rieck replied to the thread Anyone wanna help me troubleshoot my Simasimac Reloaded SE/30 board?.No bridges.
