Recent content by lisa2

I checked my Gatorboxes and I have no new corrosion. I also found the photos of the original issue I had. While I had thought this was due to something being spilled on the board, now I wonder if this something that leaked out of the oscillator package. The PCB itself is conformally coated.

Tonight I will check my 2nd CS unit and see if it has any corrosion in that area and report back. I also have a GatorStar GXR it runs faster and uses a different oscillator, I will try to check that also.

One of my Gatorboxes worked fine when I got it, then one day while I was using it just quit. Looking at the board I could not see anything obviously wrong. Lucky I had a 2nd working unit. After many-hours of comparison, I found the voltage on the bypass cap next to the 40Mhz oscillator was...

Note that while flash memory is very common today, in 1989 this was one of the very 1st devices to use a large amount of flash memory like this ( it holds the OS image that in the eariler version was loaded into RAM from a server ), these chips were very expensive at the time. The RAM is...

Years ago I purchased a NOS Apple OneScanner to use with my Lisa running MacWorks Plus. It's hard to find a scanner works with 68000 B&W systems ( the OneScanner does, this is what makes it so special ) , most require ColorQuickDraw that requires a 68020 or better. I set it up, did a few scans...

I seems to me that when folks learn that the Lisa was clocked at 5Mhz vs. the Macintosh at 8Mhz it gives the impression that the experience of using a Lisa is almost 40% slower than using a Macintosh. This is not helped by reports that using the Lisa Office apps are dog slow. My experience in...

Yes, if the HD is a Lisa parallel port HD such as a Profile, Widget or an emulator. Booting MW+ from SCSI hard disk requires the additional QuickBoot Rom.

While this made for a great press release for the CHM back in 2018, it never happened...:( The referenced LisaList mailing list is pretty much dead as well.. this is why I started LisaList2.com

When searching for a PlexWriter, note that the "S" ( PX-W124TS ) in the model number is important, I think "S" denotes SCSI.

On the face of the drive it is labeled: "PleXWriter 12/4/32" SCSI probe shows it as a "PLEXTOR CD-R PX-W124TS Ver. 1.04" 12X CD-R 4X CD-RW 32X CD-ROM I definitely boots, I tried it tonight on the UMAX S900 and booted the recovery CD. Rick

I had a Plexor 12X SCSI CDRW drive in my PowerMacintosh 7200 and it was bootable. I still have this drive, now in a UMAX S900 clone and bootable there also.

I am in for a board if you wish to factor this into your count! Rick

AUI cables were common at one point. Early Ethernet ( 10BASE5 A.K.A. "thicknet" ) used a large transceiver that was many times installed in the ceiling and a AUI cable was used to bring the connection down to the computer. Here is an example...

Not to sidetrack this thread, but for FloppyEmu using DiskCopy 4.2 images: this is quote the the FEMU manual: "Disk Copy 4.2 images contain an embedded checksum value, used to help detect if the file is corrupted. When using FloppyEmu to write to an emulated disk using a DC42 disk image file...

I have found that sometimes "good" images for the FloppyEmu are "bad" for creating real disks. Maybe the FloppyEmu is not using/updating the checksums or tag bytes correctly, I don't really know. To make a physical disk you may want to try using BLU to write a disk using the image you have. Rick