Your quote from the Zilog manual is for NMI, but there is similar verbiage for maskable interrupts as well. A DI is needed if you use your ISR for a...
Well, for directory lookups CP/M 3 with HASH buffers would work better. I guess if you have enough track buffers then you should essentially have the...
Yeah, polling is not likely to work for WP/disk change. One way is to feed that to an interrupt, but also I've seen it fed to a flip-flop that can be...
For standard deblocking buffers (not track buffers), the BDOS provides hints to the BIOS that should allow you to know when to flush a buffer. If an...
My gut reaction to all that track-buffering was the headache/nightmare of flushing/syncing to disk. I'm not certain that track buffering is worth the...
clearly, something is going wrong with the CSV contents. There's no sign of overlap in the buffers, and no known bugs in BDOS. It has to be something...
First exposure to computers was timeshare BASIC on a Honeywell 2040, followed by Wang 600 Programmable Calculator. Then on to CP/M et al. and the Heath/Zenith 89, and then a Kaypro 2X as the first computer I actually owned.
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