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Author Topic: 1200 PPC on original case  (Read 3400 times)

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Offline darksun9210

Re: 1200 PPC on original case
« on: January 27, 2009, 11:34:20 AM »
thats pretty much the setup i have, but i need to fix a few things first...

best thing is to have as a base, is an 060 based PPC bard, rather than an 040, as that'll save it a shed load of heat problems. the 040 on my PPC board has a metal plate that conducts the heat down into the metal shelf it is sat on, so no real problems there, except i can't use the machine anywhere else. :lol:

Pico PSU and an ATX to amiga adapter are great ideas. a totally internal ATX PSU in an A1200 fed off a laptop power adapter. plus it gievs you a drive power loom to feed the floppy drive, slim DVD/CD drive, the cooling fan(s), and an extra feed to the floppy port on the motherboard.
not sure what i've done to mine, but the minus 12 volts only pulls down minus 3-4 volts so audio is crackly.

airflow is very important. and don't neglect heatsinking  the other chips on the bvision board, as pretty much all the chips get too hot to touch, so i got a pack of memory heatsinks and stuck them to all the other chips, and have a fan blowing down on the permedia2 head sink, which also covers the PicoPSU and PCI chips on the bvision card.

make sure the PPC fan is clean and in good working order (doesn't need a push to get it going), or you have some ducting from a fan somewhere blowing over the PPC heatsink.

leave the trapdoor off the bottom so the hot air has somewhere to escape.

a slimline CD is possible. but i found the only way to fit it in was using an IDEfixExpress adapter as that allows you to move the interface around depending on where you want to fit the drive, and route cables etc. as the fastATA won't let you close the case (the keyboard screws push on the rom chips) and the 4xIDE stands up from the mainboard where you'd want the drive to go.
a 1.8" drive as opposed to a 2.5" drive helps a lot to, as it is physically half the size of a 2.5" drive - pretty much rivals a compact flash card for size, and the hitachi travelstar 60Gb i have has the standard 44pin ide connector.
be carefull, as some 1.8" drives have ribbon connector or "zip(?)" connector, which would require another adapter taking more space, and is only built to take upto 20 physical disconnects/reconnects...

i didn't bother with a monitor switcher, but just bought a cheap LCD TV that has scart, composite, s/vhs, and vga inputs so just switch as needed if it doesn't do it automaticaly...

not sure what i've done to the IDEfixexpress, but ever since i tried to run the DVD drive with a seperate (v.cheap) PSU and i smelt the magic smoke, even without the dead drive connected, its been throwing back dodgy data over the IDE bus, so my shopping list is pretty much the same as yours...
PicoPSU
IDEfixExpress
slimslotloadCD/DVD

ah its all in the name of fun... :-D :lol:

A500, A600, A1200x3, A2000, A3000, A4000 & a CD32.
and probably just like the rest of you, crates full of related "treasure" for the above XD
 

Offline darksun9210

Re: 1200 PPC on original case
« Reply #1 on: January 27, 2009, 12:10:53 PM »
nope, its just how do you want to connect the DVD/CD drive to your machine :-)

i found the fastATA was too big, and to fit with the Bvision, had to be raised up using the "bvision kit" from amigakit to lift it over the GFX card.
this ment that the keyboard would no-longer fit in a standard case.
so i couldn't use the FastATA to connect a DVD drive

i tried just a buffered 4xIDE interface, but it stood up from the mainboard off the IDE port, which was right where i wanted to put the cd drive. so that was no good.

i bought an IDEFixExpress, which connects to the IDE port via a cable and gives a 44pin connector for small hard drives and such like, plus a couple of 40pin normal IDE ports that i could connect the DVD/CD drive. perfect. till i blew it up.

fortunatly, the FastATA and buffered 4xIDE boards are not totally wasted as they are currently doing service in my other A1200s

A500, A600, A1200x3, A2000, A3000, A4000 & a CD32.
and probably just like the rest of you, crates full of related "treasure" for the above XD