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Troed - progress

Where Alpha builders can post pics and progress etc
troed
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Re: Troed - progress

Post by troed »

... it wasn't until after I proudly had soldered my contraption to the board that I noticed that the DIL14 socket I thought I had used was still lying on the desk ...
meh.JPG
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Icky
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Re: Troed - progress

Post by Icky »

troed wrote: 09 Oct 2018 21:20 ... it wasn't until after I proudly had soldered my contraption to the board that I noticed that the DIL14 socket I thought I had used was still lying on the desk ...

meh.JPG
I have those moments.
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troed
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Re: Troed - progress

Post by troed »

In transit:

32.08 crystal
Video unf*ck board

Missing from the parts kit:

72LS02 - and it seems I don't have one in all of my 74xx collection. Will order.
- edit #2: Ah! Actually I have a bunch of 74ALS02. So unless it needs to be "slow" that should work ;)

Everything else I need to boot up populated now. What might be different from others is that I will use IMP DMA and Shifter.

edit: Ah, no, still need to steal an MFP crystal from one of my (all working) machines.
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PhilC
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Re: Troed - progress

Post by PhilC »

I had no issues with the IMP shifter and DMA, so you should be ok (famous last words)
If it ain't broke, test it to Destruction.
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troed
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Re: Troed - progress

Post by troed »

Forgottenmyname wrote: 10 Oct 2018 20:26 I had no issues with the IMP shifter and DMA, so you should be ok (famous last words)
Were you using a complete IMP kit? My GLUE and MMU are Ricoh
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PhilC
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Re: Troed - progress

Post by PhilC »

No just the shifter and dma. Emails now back in my Mega but still using the IMP shifter
If it ain't broke, test it to Destruction.
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troed
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Joined: 21 Aug 2017 22:27

Re: Troed - progress

Post by troed »

First boot: Stable white 60Hz screen. Usually an indication TOS isn't executing or being held in RESET.

Not sure when I'll have time to debug, but, I do know I haven't soldered a reset switch to the board, thinking that it was only needed if I want to ... reset. Am I not thinking that through?
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exxos
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Re: Troed - progress

Post by exxos »

Reset switch shorts out a capacitor which then re-charges to trigger a reset.. so it shouldn't matter if there isn't a reset switch... you may need to up the value of a cap to 47uF (from 10uf) as I think icky had reset issues.
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Icky
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Re: Troed - progress

Post by Icky »

exxos wrote: 13 Oct 2018 10:47 Reset switch shorts out a capacitor which then re-charges to trigger a reset.. so it shouldn't matter if there isn't a reset switch... you may need to up the value of a cap to 47uF (from 10uf) as I think icky had reset issues.
Not me :) Think it was Forgottenmyname

Good progress though troed.
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PhilC
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Re: Troed - progress

Post by PhilC »

yeah it was me, still messing around with that but just takes 1 reset and off it goes for now.
If it ain't broke, test it to Destruction.
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