Mike's PCjr Page

It took me a while to parse this, but I think I'm reading it correctly now. Sorry if it wasn't proper English! I speak French, and I'm certainly not perfectly bilingual. Well, I just tested the ASPIPPM1.SYS + ASPIDISK.SYS combination on an 8088-propelled PCjr, and it doesn't work. Actually, ASPIPPM...

Just wondering... Did I accidentally discover that not only the Iomega's driver could be used on an 8088-based machine (to be confirmed), but ZIP Plus drives, or even ZIP 250 drives would also be usable on the PCjr?

I wonder how well it performs. Not bad at all. I still haven't ran any performance test, but I'm happy with the speed. I use the module BYTE.ILM instead of the standard NIBBLE.ILM, so I guess it's using the bidirectional mode, though it just says "Mode 2". If it were not for the annoying ...

Mike, Jim, thank you for your input. Using the Iomega ASPI manager, I found a way to allocate a drive letter while still in CONFIG.SYS. Instead of running GUEST.EXE from the AUTOEXEC.BAT file, I load ASPIDISK.SYS (from Adaptec) in CONFIG.SYS, before the RAM disk device driver. DEVICE = ASPIPPM1.SYS ...

I use DOS 5 and 6 because I want to be able to access partitions larger than 32MB, whether it be ZIP disks or "Interlinked" disks . I guess I'll have to live with that annoyance.

I got a new toy: a parallel ZIP 100 drive. I tried it with both the Iomega driver and Palmzip.sys. The former works on my PCjr since it has a V20 CPU, which handles '286 instructions. However, I cannot figure out how to have Guest.exe take the letter C: AND have a RAM disk at the same time. The RAM ...

Thank you, Mike, for doing all this testing. Your FTP testing shows that Jr sends faster (23kB/s) than it it receiving (15kB/s). Apart from there being no latency due to polling, what do you attribute this to? Is reading from the RAM disk less demanding on the CPU than writing to it? Is the FTP prot...

Yes, I thought about BOOTP. However, I think I'd rather have Jr boot on it's own. No network adapter required, no cable... You flip the power switch, and Jr is up and running a couple of seconds later. It would allow networking without imposing it on you. Besides, when COMMAND.COM needs to be reload...

As for the Xircom on the P3 ... the parallel port is pretty limited. If you are getting 205KB/sec through it, that works out to almost 1.6 megabits per second. Did it pick ECP or EPP mode to get that? No. I set the port to bidirectional mode in the BIOS configuration. I wanted to determine the maxi...

Well, it appears that DR-DOS is only $35 after all. I will inquire whether it includes the ROM utilities. I will also try to have the PCjr boot one of the free versions. To be continued...

Christian