For SAS/C users: To make pp.lib (the SMALL_CODE version, all data relative to A4) use: lmk -a ASMFLAGS=-dSMALL_CODE pp.lib To make ppnb.lib (the LARGE_CODE version, absolute data, no-base) use: lmk -a ASMFLAGS=-dLARGE_CODE ppnb.lib Then copy 'pp.lib' and 'ppnb.lib' to LIB: If you compile your programs with the default, small code model use 'pp.lib', if you compile your programs with the large code model (-b0) use 'ppnb.lib'.