I am not the super-frequent forum poster i've been a decade ago, but the H4 is again
a project that lives from feedback. I'll provide mine in this thread.
email me on beetle (at) atari (dot) org in case i do not respond here quick enough :)
Yesterday the H4 mainboard arrived here in its shiny glory, what a board!!
First i visited my local electronics shop to see what they can provide.
I got a lot of sockets, most TTLs, a couple of diodes and restors to give it a start.
The rest will be ordered online.
cya,
btl
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 15:39
by derkom
It's okay to be late and slow. Just means you don't have to find the bugs. ;)
Welcome!
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 15:41
by exxos
Don't think anyone is late as building only started yesterday :) A few people haven't even got their boards yet.
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 15:45
by btl
Thanks!
this is what i got:
20191122_163020.jpg
So, lets start with the easy chip first :)
20191122_163654.jpg
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 16:23
by btl
i'm going the Falcon RAM way, btw
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 16:31
by exxos
btl wrote: 22 Nov 2019 16:23
i'm going the Falcon RAM way, btw
The way everyone hates but me :roll: :lol: :thumbup:
Nice looking magnifier!
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 16:33
by TimNaber
I'll be using a Falcon RAM board also. I upgraded two falcons to the 16mb upgrade from Exxos, so I would like the old ones to be useful.
With the way it is tilting, it looks like it might need a stand off.
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 16:50
by btl
These expansion slots are for stuff like this?
20191122_174233.jpg
and the tilting isn't so bad as it seemed on 1st pic:
20191122_174550.jpg
Re: will it compute? btl's attempt to build the H4
Posted: 22 Nov 2019 17:25
by btl
TOS, YM, Shifter, MFP and Bad DMA sockets are in...
so, these are the sockets, TTL chips and jumpers that i got in in today's session.
All solder joints have been cleaned and inspected.
I threw two 6850s in as well.
20191122_201620.jpg
Re: will it compute? btl's attempt to build the H4