Looking at the pre-Moxon-era Acorn User review of the Aries B20, I found this intriguing remark:Well, I've learned to say, "Never say never", so there's that.No, I'm not suggesting that you do a version for the Aries boards now!
Now, the Aries B32 does support mapping in the 12K of extra RAM into sideways memory, or even putting the whole 32K into sideways memory as two 16K banks. There is discussion in the manual involving sideways memory, but since there are dedicated features for such memory with that board, I don't know whether repositioning of the actual shadow RAM as a single contiguous block is supported or, after a brief look, described.The Aries manual even provides a simple routine which allows the two areas to be considered as contiguous memory from &3000 to &CBFF.
Of course, the B20 only has the basic amount of shadow RAM, and it seems that the B12 was the companion adding sideways ROM/RAM capabilities. Unfortunately, the B20 manual is not readily available, and so I don't know what the "simple routine" is, but perhaps knowledge of the ROM interfaces and routines might be sufficient.
Statistics: Posted by paulb — Sun Aug 10, 2025 4:58 pm