http://maben.homeip.net/static/S100/books/CPMbooks/CPM%20Programmers%20Handbook/Programmers%20CPM%20Handbook%20by%20Andy%20Johnson-Laird.pdf
On Tue, May 27, 2014 at 11:48 PM, Crusty OMO <[email protected]> wrote: > Fabio, > > Nice going! It's S-100, so imho, it's very much on topic. Aren't you > afraid writing in C would take up the whole 2K? (and that's just to > initialize the variables). I guess SDCC must be very a very slim C. > > Re: Bootstrapping CP/M, Rich Cini wrote a great guide on bootstrapping > it. Between reading a few chapters of "The Programmers CP/M Handbook" by > Andy Johnson-Laird and Rich's guide, I was able to boot up CP/M. > This book is available somewhere as a download, but you can get a real > copy pretty cheap on Amazon. > > Cheers, > Josh > > > ------------------------------ > Date: Tue, 27 May 2014 13:04:44 -0700 > From: [email protected] > To: [email protected] > Subject: [N8VEM-S100:3798] Ithaca Audio Z80 board kit UP & Running with > custom monitor! > > > Ok, ok, this is offtopic as the Ithaca Audio is not a N8VEM board, but I > got it as a bare board, built and debugged it... so it still somewhat > related :-) > I was able to get this board from 1977 up and running in my N8VEM-based > system and took the occasion to write my first monitor from scratch, as an > exercise. > > This board fits a 2708 EPROM by default, or a 2716 after a simple mod > (specified in the manual itself), so that is 2kb worth of space for my > monitor: i decided for a mix of C (using SDCC) and ASM and this is the > result. https://github.com/hkzlab/minos-z80-monitor > > The monitor is quite simple: all its "features" can be summarized as > * I/O using the N8VEM console I/O, but easy to redirect on a serial console > * Supports READ/WRITE of a single byte from memory > * Supports IN/OUT from a port > * Supports jumping the execution to an address > * Supports XModem transfer to RAM at 19200bps using the N8VEM serial board/ > Enough for a small development system (not that I really needed all this > with the fantastic N8VEM Z80 cpu board I have...) and also as an example of > a small SDCC project. > > Now I really need to read up on bootstrapping CP/M... > I haven't had this fun with an hobby in ages :-) > > Bye everyone! > Fabio > > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
