Available: IBM desktop "System/23 Datamaster"

On Aug 8, 2014, at 12:49 AM, Nigel Williams <nw at retrocomputingtasmania.com> wrote: See my earlier post. Yes it was *definitely* an 8085 with additional HW to allow for up to 128KB of ROM and 128KB of RAM. The internal SW automatically handled dealing with "page" crossings and allocations. I can't remember exactly the size of a page (1K seems to stick in my mind but it could be 16K as well...too long ago). The other cool thing was that all of the memory allocation was automatic and garbage collected. That required the internal SW to recompute the physical address of an "object" that was being used if something was invoked that could have caused a garbage collection. Because the DataMaster was started before the 8088 was available. The SW took *way* longer than expected because of several changes in direction. At first the BASIC was its own variant. Then it was to be compatible with the 5110/5120. The final change (and what we ultimately shipped) was to be compatible (more or less) with S/34. Which BTW is why it's called System/23 Datamaster. The name was intended to imply that S/23 and S/34 were related. BTW because of the lateness of S/23, an interim project the 5120 was done (basically a repackaged 5110) so that there was a current product in the market. TTFN - Guy