This is the README for DSPMemorySize.N.bs.tar.gz [Download] [Browse] [Up]
; README for dspmemsize.asm [V0.90, 92-09-10] ; ; Dear Archive maintainer, ; Please store DSPMememorySize.tar.Z in the directory for DSP related programs. ; ; Description: Program to find if the external DSP RAM is 8kw or 32kw on NeXT. ; Tested for Release 2.1 ; ; ; Written by Izumi Ohzawa. ; ; ;; It does not do a real test, but relies on memory map of 8k/32kword configurations. ;; If larger DSP RAM expansion becomes available for NeXT, this program will break and ;; must be modified accordingly. ;; Currently, it simply test if there are actually 32k unique memory cells that can ;; retain values. This is done by writing the address value into each memory location, ;; and reading them back to see if the address == content. ;; If any mismatch is found, then we just assume that the external RAM size is 8kw. ;; Mismatches will be found for 8kw configuration because 8kw of RAM is aliased into ;; 32kw address space multiple times, i.e., same physical memory cell appears at ;; 4 different addresses. ;; If all 32kwords can retain unique values, we assume the RAM size is 32kw (it may be ;; actually larger if larger SIMM is installed. ;; Since all addresses are presented with memory cells, we don't have to worry about ;; floating data lines.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.