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[cameng]

Is it possible to install two extra sockets and two different kickstart roms from what is fitted into the empty spots in My A3000 marked ROM 0 and ROM 1 and swap between them?

[slaapliedje]

What would be even cooler is to upgrade your rom space to hold twice as much stuff (Does the A3000 have 512KB Roms? I thought that's what they are). You could put a whole lot more of workbench in ROM which I think would be faster. Actually what I think would be nice is an EPROM to put AROS in, or at the very least the OS3.9 rom so that it doesn't have to be patched during the boot process.

I guess if I had one of those boards that allow blizkick or something similar...

(sigh) why is Amiga stuff so pricey?

slaapliedje

[Azryl]

Short answer.. NO

I believe the extra sockets were used in the A3000UX model, but I find very little information regarding this online.

Az

[cameng]

Originally Posted by Azryl

Short answer.. NO

I believe the extra sockets were used in the A3000UX model, but I find very little information regarding this online.

Az

Thanks, worth a shot I guess Looks like I will just use my other Amiga's for compatability and install 3.1 roms and start pimping this machine, starting with my newly aquired cybervision 64. Now to raid my sisters house for my old LCD monitor!

[Pentad]

Originally Posted by Azryl

Short answer.. NO

I believe the extra sockets were used in the A3000UX model, but I find very little information regarding this online.

Az

I had an Amiga 3000UX and I don't remember anything in those sockets.

It was a long time ago but I'm pretty sure they were empty.

-P

[matt3k]

No can't use them. They weren't used in the UX.

I fairly sure I read somewhere along time ago that they were left over from prior revisions and that they were left.

Where is Dave H. when you need him?

[Castellen]

The other ROM positions (U182, U183) are for ICs that have a different pinout such as the 27C220 and 27C2048.

The standard positions U180, U181 are for pinouts to suit 27C100, 27C200, etc.

You can't have two types of ROMs fitted at once, although if you were to disconnect _ROMEN to each ROM pair and fit a toggle switch so that only one pair can be active at once, then it would be possible to switch between the two. You'd need to add pullup resistors on the ROM _OE lines for when nothing is connected.

But it's a lot nicer use to use a ROM switcher module or BlizKick instead of chopping the hardware around.

[Heiroglyph]

It's for two different pinouts for ROMs and EPROMs.

They are wired in parallel, so which ever one has a chip in it will respond.

Edit: sniped by a better reply while I talked to my kids

[cameng]

Originally Posted by matt3k

No can't use them. They weren't used in the UX.

I fairly sure I read somewhere along time ago that they were left over from prior revisions and that they were left.

Where is Dave H. when you need him?

My thoughts exactly, he is probably hiding in Florida. Thanks for all your responses, I am blown away by the interlect. I might get A ROM switcher to try out. I guess the cybervision 64 will pass through or I will just swap cords.

Thunder Birds are go

[matt3k]

For most uses 3.1, the Cybervision 64 pass through, and WHDLoad make for a great system. A rom switcher makes sense if there is a game that isn't created in WHDLoad that you want to play.

Great responses from the other Amiga users.

[SpeedGeek]

If you have 27C400 or equivalent ROMs in your A3000 than you already have 512KB of unused ROM capacity. The trick is in how to use it:

http://www.amiga.org/forums/showthread.php?t=59648

[stefcep2]

Originally Posted by slaapliedje

What would be even cooler is to upgrade your rom space to hold twice as much stuff (Does the A3000 have 512KB Roms? I thought that's what they are). You could put a whole lot more of workbench in ROM which I think would be faster. Actually what I think would be nice is an EPROM to put AROS in, or at the very least the OS3.9 rom so that it doesn't have to be patched during the boot process.

I guess if I had one of those boards that allow blizkick or something similar...

(sigh) why is Amiga stuff so pricey?

slaapliedje

I have a set of re-programmable ROMS with a custom 3.9 ROM plus patches. Problem is compatibility eg can't boot into Workbench with no startup because the loadWB command won't work from CLI, For me this was a deal breaker, and so I took them out. I could get them re-programmed with something more compatible I suppose, but it means spending more money *sigh*

[SpeedGeek]

Originally Posted by stefcep2

I have a set of re-programmable ROMS with a custom 3.9 ROM plus patches. Problem is compatibility eg can't boot into Workbench with no startup because the loadWB command won't work from CLI, For me this was a deal breaker, and so I took them out. I could get them re-programmed with something more compatible I suppose, but it means spending more money *sigh*

You probably created a dependency problem when you built those 3.9 ROMs. If you look at the Remus documentation you see that some modules/libraries have dependencies on others. For starters make sure you have LoadWB in C: and 3.9 compatible workbench and icon libraries in libs:

[mechy]

Originally Posted by Castellen

The other ROM positions (U182, U183) are for ICs that have a different pinout such as the 27C220 and 27C2048.

The standard positions U180, U181 are for pinouts to suit 27C100, 27C200, etc.

You can't have two types of ROMs fitted at once, although if you were to disconnect _ROMEN to each ROM pair and fit a toggle switch so that only one pair can be active at once, then it would be possible to switch between the two. You'd need to add pullup resistors on the ROM _OE lines for when nothing is connected.

But it's a lot nicer use to use a ROM switcher module or BlizKick instead of chopping the hardware around.

Are you sure about the type of roms the 2 sockets can use? I know the 27c220,2048 etc can replace the rom tower(which used 27c200,400 etc) on the rev 7 boards direct(u180,181) eliminating it ,but i seem to recall i tried the 27c220/2048 etc in the u182,u183 positions and it did not work. My memory may be failing me but those sockets don't seem to work for any rom/eprom pinouts i found.

Have you actually used those sockets?

Mech

[Heiroglyph]

I think those sockets are inverted, that's why the rom towers were originally needed.

If I remember right, you need to fold all the pins the wrong way so that the chip is upside down in the socket.

I'm not sure if they ever fixed it or just started using the other two sockets.