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Is there a 68K mac With PDS and NUBUS slots??

old_68k

Member
Hello all,

Love my 68K macs. My fav is my upgraded LC 575.

I have been trying to find a 68K mac with a PDS slot AND NUBUS slots. Does this exsist???

Seams to be EIGHER PDS or NUBUS... Not both.

I have been looking through service manuals... The Quadra 630/640 has both... BUT the PDS slot is diffrent... Not sure if you can get an adaptor to a normal PDS slot??

Anyone have any info??

D.

 

bibilit

Well-known member
The only one that is close to it is the IIsi, having a PDS (030PDS) slot that can manage a Pds to Nubus adapter

 

John_A

Well-known member
Well, a IIfx has both, but the PDS in a IIfx is not compatible with ordinary PDS cards. To my knowledge there were only 2 or 3 different accelerator cards made for the IIfx PDS, and to be honest I have not seen one for sale in a very long time.

 

beachycove

Well-known member
Strictly speaking, yes there are many such Macs. Several 030-based Macs have both PDS and Nubus, such as the IIci, IIvx and the IIfx. Similarly, a number of 040-based 68k Macs have both PDS and Nubus, such as the Quadra 650, 800 and 950. Beyond that, the 6100, 7100 and 8100 also have a 601 PDS, meaning that the 7100 and 8100 have both PDS and Nubus.

You are probably thinking only about the LC PDS introduced with the original LC, and that continued through to the LC630 and derivatives (even the 5200). There, it is true, you have no machine with both. However, the LC PDS is only one form of PDS slot. The PDS was a common feature of Macs, and appeared in a variety of forms in the late 80s and early 90s in everything from the SE to the 8100, and even in some PowerBooks (the Duos).

 

old_68k

Member
The PDS slot in the 650 Isn't the standard white female connector with 3 rows of pins. Its black and looks like a 80pin sca scsi 3 connector.

Maybe there is an adaptor to the white plug??? OR is this were the DOS card goes?? You must be able to plug somthing into it...

D.

 
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Bunsen

Admin-Witchfinder-General
  1. What kind of expansion or upgrade slots does my Mac have?
    from macfaq.org.  Note that this seems to have been written before Quadras appeared, with their 040 PDS.

Cut a long story short, here are the different and incompatible types of PDS:

  • No PDS - 128, 512K, 512Ke, Plus, II, IIx
  • Proprietary slot, not PDS - Classic, Classic II
  • Limited PDS, no cards ever made - IIfx *
  • SE PDS - SE only
  • LC PDS - LC Macs, Quadra 630, 640, 640DOS, 51xx, 52xx, 61xx, 62xx
  • 030 PDS - SE/30 and IIsi **
  • IIci PDS - IIci, IIvi, IIvx, Performa 600
  • 040 PDS - Quadras ***, PowerMac 6100 with DOS card adapter ****
  • 601 PDS - PowerMac 6100, 7100, 8100

*   cannot communicate with Nubus slots

**  NB: the IIsi Nubus adapter does not work in an SE/30

*** except 630, 640, 640DOS

**** should also work in 7100, 8100, WGS 9150 but for space issues

Various Powerbooks also have PDS-like connectors for expansion, such as the PCMCIA cardbay in the 520/540, or the Docking Connector on the Powerbook Duos.

 
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Bunsen

Admin-Witchfinder-General
The PDS slot in the 630/640/650
While the 630 and 640 are essentially identical, the 650 is a completely different machine.  The latter has an 040 PDS.  Perhaps that is what you are looking at?

Note that the 630/640 have a number of other, single purpose, proprietary expansion slots which are neither Nubus nor any form of PDS, in addition to a single LC PDS.

 

Bunsen

Admin-Witchfinder-General
Well you can have both, but not if it has to be LC PDS.

What cards were you hoping to mount?  Perhaps it's possible to have the functions you want using different cards.  For example, an LC PDS video card, and and Ethernet Comm Slot card, on motherboards that have both.

 

Elfen

Well-known member
I would have guessed the IIci as one the only one with both. Nice to see such proper information has been gathered here.

 

Elfen

Well-known member
The closest thing I can find is an LC Add-on called PowerMac Work Station. There are 2 posts about it on the forum:

https://68kmla.org/forums/index.php?/topic/22940-what-was-that-sonnet-upgrade-called-for-the-lc-that-doubled-the-size/

https://68kmla.org/forums/index.php?/topic/15251-micromac-power-workstation-did-anyone-ever-buy-one/

And a link to the (long since dead) website:

http://www.micromac.com/products/lc_pws.html

Though this will give you 3 PDS Slots, (Correct me if I'm wrong) there was a PDS-NuBus adapter that can be used.

Only a LC-series Mac will be able to run your Apple IIe card.

But if you can't - what about a 68K Software Apple II Emulator? You still will be running your Apple II on a window. The only (major) advantage to the IIe card is that you can connect Apple IIe/c disk drives to the card.

 
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Bunsen

Admin-Witchfinder-General
A dos card (NUBUS) and a Apple IIe card (PDS).
.

Ah.  Well, the IIe card requires an LC PDS, so I'm afraid you're out of luck there.

On the other hand ... you might be able to put the IIe card into a Quadra 630/640 DOS.  The DOS board in those mounts to the 040 CPU socket, rather than being a Nubus card.  And it has an LC PDS, as well as a Comm Slot for Ethernet.

There may be space issues, but if you really want DOS, Mac OS, and a hardware Apple IIe in the same box, that might be your only shot.

And a 630/640 DOS is probably a lot easier to find than a Nubus DOS card.

/edit/ according to LowEnd Mac's link above:

the DOS card plugged into the CPU socket and also used the PDS
.

Now, I'm just working from memory here, but I seem to recall someone on these forums (or elsewhere) pointing out that this is not quite true: that the DOS card blocks access to the PDS, but doesn't use it.  If that is true (and I'll wait for confirmation from someone who has one) you might be able to run a PDS extension cable out of the slot, and mount the IIe card somewhere else.

Or the above could all be horsepucky.

 
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Bunsen

Admin-Witchfinder-General
an LC Add-on called PowerMac Work Station.

/

Though this will give you 3 PDS Slots, (Correct me if I'm wrong) there was a PDS-NuBus adapter that can be used.
.

PDS - Nubus converters were never made for the LC PDS.  They exist only for the IIsi, the 610, 660AV, and 6100.

 

Bunsen

Admin-Witchfinder-General
lc630dos_guts.jpg

Photos from.

630 'DOS Compatible' model.

The 630DOS has a daughter-card plugged into its the normal '040 processor socket, and sitting on the daughter-card is both the '040 and a 66mHz Cyrix 486 DX-2.
/
Higher up on the daughter-card is the purple 68040 processor, towards the back of the mainboard is the heat-sinked Cyrix. The piggy-back card off the daughter-board (to the right of the two blue IDC connectors) is the Vibra16 sound card.

Upside-down beside the Vibra16 is the card the joystick port is off, and then closest to the camera, standing upright is the 10bT ethernet card.
.
It looks like (going on the motherboard diagram below, and the photo of the above machine's back panel) the joystick card is the one taking up the PDS space.  Whether it connects to the PDS slot or not, you can't see from the photos.  But just maaaybe, if you can do without a DOS joystick port, you could remove that daughterboard.  Maybe.

lc630dos_rear.jpg
You can see the small joystick symbol just under the port in the place where a PDS card would go.

.
630ser.gif via MacGurus


 

 

Bunsen

Admin-Witchfinder-General
Whether it connects to the PDS slot or not, you can't see from the photos.
.

I checked the service manual - it does connect to the PDS.  So, that seems like a dead end.

Seems strange that they'd bother using the PDS when they have full access to the CPU bus.

 
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