test-drb July 2009

test-drb@ccmp.vtda.org

181 participants
245 discussions

Classic mac fun (and some questions) (continued...again...)

by borisg＠unixg.ubc.ca

Use BasiliskII to emulate a Mac under XP. The version that I've found works best for me is at: http://gwenole.beauchesne.info//en/projects/basilisk2 All you need is a copy of your Mac's ROM and an image of a HDD with a Mac OS. Be warned though, once you see how fast a 680x0 Mac runs under emulation on a fast machine it's hard to go back to the real Macs. Recently I pulled my MacIIvx out of storeage and was shocked at how slowly it ran. It was nice, however, to see again how much functionality could be crammed into a program << 1 Mb in size Boris Gimbarzevsky >I have but one obstacle left... being able to unpack an apple floppy >image file from a PC. I have a bin file containing the files I need >to get the quadra going. I got the floppy drive working on the >quadra. I can read and write mac floppies from my windows machine. >But I can't get the files out of the bin file. And I can't write the >bin file directly to the disk and make the quadra read it. So i need >either a mac emulator I can run on XP, or a windows utility to unpack >the mac bin file and produce individual files which I can write to the >floppy. Anyone have any ideas? > >I also picked up a rare and elusive kung-fu black terminator for the >IIfx. So I should be able to attach the 600e to that machine and get >it going. That hard drive would hopefully be recognized by the >install CD. Then I would only need to find an AUI to RJ-45 doodad >which is skinny enough to fit into the recessed ports on the IIfx. I >have an AUI thingy now, but it's too fat to reach the db-15 connector >on the network card. > >brian

15 years, 10 months

Classic mac fun (and some questions)

by julianskidmore＠yahoo.com

Hi folks, > Chances are that it's actually a BinHex file, or perhaps one that's been > unpacked, or it's a MacBinary file (later version of BinHex don't > actually generate true hex, so it might still look "binary"). Surely the easiest way is as follows: 1. First, download the .smi disk images from Apple for system 7.5.3. http://www.info.apple.com/support/oldersoftwarelist.html There are 19. 2. All the disk images *are* bin files. If you go here: http://wiki.oldos.org/Mac/68kEmulator You'll find info on Stuffit Expander 5.0 which can expand bin files and copy them to 1.44Mb floppies. You only need the first two steps to start converting disks. -cheers from julz @P PS. Gosh I realise I'm really fortunate, I can ftp straight onto my Performa 400 via its Ethernet card and if I can't do that, I could use a Zip drive.

15 years, 10 months

VAX-11/750 EMC Memory Board LEDs

by bqt＠softjar.se

David Comley <david_comley at yahoo.com> wrote: > --- On Wed, 7/8/09, Ethan Dicks <ethan.dicks at gmail.com> wrote: > >> > One possibility is an ECC fault.? ISTR that since the >> > boards fire up >> > with zero or random contents, most/all of the locations >> > don't have the >> > right check bits.? The board sets the checkbits all at >> > once at >> > power-on, possibly with some sort of startup/refresh >> > counter, so it >> > might take a noticeable time to strobe through the array. > > Yes, that seems reasonable. The puzzling thing is that on all the boards, the light stays on, just less brightly, after a few seconds. Sounds unlikely that they indicate ECC errors if the are on most of the time, even if dim. Access seems much more likely. > Is it the memory board or the memory controller that sets the checkbits ? It is the memory controller. The board itself is a pretty stupid array of memory cells. Even ECC isn't handled on the board, if I remember right, but is handled by the controller. The board just gives 39 data bits for every 32-bit word. And at startup, every memory board is accessed in parallell by the controller to initialize the ECC bits. So they should all be glowing brightly at startup if it is an access indicator. But in that case, I would expect them all to then turn off as no memory access will be going on after that, until the machine boots. >> > dark?? Are your RAM chips socketed by chance > > No, they're soldered in. > > Each one has a switch that I believe allows you to take the board offline. I can take any board offline (which throws a red memory configuration error lamp on the memory controller) except for the board in the left-most slot, no matter how few or many of these things I put in there. That makes sense. If you remove any board in the middle, you get a weird hole in the memory map, which is illegal. The board at the left end is the last board, so removing that one isn't a problem. You don't create a hole then, you just reduce the amount of memory you have. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

15 years, 10 months

Kaypro System disks?

by feldman.r＠comcast.net

(Catching up on my email after the holidays) Programs like Media Master can read and write Kaypro disks on a PC, but in order for a disk to be readable, it must be formatted on the PC (same goes for a Zorba disk). The following is the explanation from the Media Master Read.Me file: <quote>Both the Kaypro 2x,4,10 (DSDD) and Zorba 40 trk (DSDD) formats have a peculiarity that prevents you from using a disk that is created on the "native" computer.? In both cases, the only way to transfer files is to first format a transfer disk in the Kaypro or Zorba format using MEDIA MASTER and your computer.? Then use the Kaypro or Zorba computer to transfer files from the "native" disks to the disk you created with MEDIA MASTER.? Then using MEDIA MASTER, you can transfer the files to any format you wish. Another way of viewing this problem is that disks created on the Kaypro 2x, 4, or 10 can only be used on the Kaypro 2x, 4, or 10, but a Kaypro 2x, 4, or 10 disk created on your computer with MEDIA MASTER can be used on both your computer and the Kaypro computer.</quote> BTW, I have copies (for MS-DOS) of Media Master and Convert (1984, Selfware, Inc., Charles W Woodford). Contact me off-list. Bob ? >Message: 7 >Date: Thu, 02 Jul 2009 23:20:37 -0700 >From: "Chuck Guzis" < cclist at sydex.com > >Subject: RE: Kaypro System disks? > >On 2 Jul 2009 at 22:19, David Griffith wrote: > >> Here's a point I was never quite clear on...? Are disks readable >> across different machines?? For instance, take a disk that was >> formatted and written on using a Kaypro 10.? Is that disk readable on >> a Kaypro IV or Kaypro 4?? How about reading a single-sided Kaypro II >> disk on one of the double-sider machines? > >Natively, it was highly ROM-dependent as others have noted.? However, >I seem to remember a version of one of the interchange programs >(Media Master?) for the Kaypro that could be used to read a wide >range of formats.? If you had a 96 tpi drive, the possibilities were >even greater. > >Fred might remember... > >--Chuck

15 years, 10 months

Are these imsai boards?

by Watzman＠neo.rr.com

They are all S-100 cards. One is a North Star floppy disk controller, the others, I think are all memory cards (two are Seattle Computer Products, one is Vector Graphics, I'm not sure about the last card). Subject: Re: Are these imsai boards? > > Definitely not amiga anyway. > > > > Item 150357671766

15 years, 10 months

Are these imsai boards?

by brianlanning＠gmail.com

Definitely not amiga anyway. http://cgi.ebay.com/Commodore-Parts-Boards-Ram-Amiga_W0QQitemZ150357671766Q…

15 years, 10 months

Are these imsai boards?

by melamy＠earthlink.net

There are all s-100 boards. It looks like (2) 16K Seattle computer Products boards, a Northstar single density floppy controller card, and an unrecognizable static ram card (to me at least). best regards, Steve Thatcher -----Original Message----- >From: Chuck Guzis <cclist at sydex.com> >Sent: Jul 8, 2009 6:13 PM >To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> >Subject: Re: Are these imsai boards? > >On 8 Jul 2009 at 20:00, Brian Lanning wrote: > >> Definitely not amiga anyway. >> >> Item 150357671766 > >They look like S-100 to me. Note the voltage regulators/heatsinks. >Don't know what the controller is, however. > >--Chuck >

15 years, 10 months

VAX-11/750 EMC Memory Board LEDs

by david_comley＠yahoo.com

--- On Wed, 7/8/09, Ethan Dicks <ethan.dicks at gmail.com> wrote: > One possibility is an ECC fault.? ISTR that since the > boards fire up > with zero or random contents, most/all of the locations > don't have the > right check bits.? The board sets the checkbits all at > once at > power-on, possibly with some sort of startup/refresh > counter, so it > might take a noticeable time to strobe through the array. Yes, that seems reasonable. The puzzling thing is that on all the boards, the light stays on, just less brightly, after a few seconds. Is it the memory board or the memory controller that sets the checkbits ? > > Do the yellow lights seem to vary in brightness under > different > loading conditions during normal operation or are they > essentially Can't tell yet; I have some other issues to resolve with the machine before I can get to normal operation. > dark?? Are your RAM chips socketed by chance No, they're soldered in. Each one has a switch that I believe allows you to take the board offline. I can take any board offline (which throws a red memory configuration error lamp on the memory controller) except for the board in the left-most slot, no matter how few or many of these things I put in there. -Dave

15 years, 10 months

VAX-11/750 EMC Memory Board LEDs

by david_comley＠yahoo.com

Can anyone tell me what the yellow LED signifies on the EMC 1MB memory boards that can be used in the 11/750? The EMC part number of the boards is 240-011-900. The green LED appears to be for power but I'm curious about the exact meaning of the yellow LEDs since they start out bright, on powerup, and then dim quite dramatically after a few seconds, presumably after or during initialization of the boards. Thanks, -Dave

15 years, 10 months

OT: But for the vintage CPU guys: Intel 8008 clock

by christian_liendo＠yahoo.com

http://hackaday.com/2009/07/07/intel-8008-clock/ >from the site "Every year [Len Bales] designs and builds a new clock. His 2006 clock runs on the classic Intel 8008 microprocessor. The design is definitely not for the faint of heart, but he includes all code, diagrams and a good description on his site. The project is an interesting look into the not-so-distant past of computing. While the function of the project is a clock, it is actually a fully programmable 8008 computer running at 500khz with 16k of memory space and 4io ports. [Len] also links a lot of useful 8008 resources for anyone wanting to tackle a project of their own."

15 years, 10 months

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test-drb July 2009