mregeste@iss.Wichita.NCR.COM (Mark Regester) (05/17/89)
Has anyone used the "_Turbo C Memory-Resident Utilities, Screen I/O, and Programming Techniques_" by Al Stevens to create a memory resident program? I inherited a memory resident program that I must maintain. The program is based on the examples in the book. I have compiled and run the program successfully on '286 and '386 machines, but I cannot get the program to run on 8088 machines. When I press the program's "hot key", the PC "locks up". Sometimes a warm boot will revive the machine, other times a cold boot is required. I have looked everywhere that I know of to make sure that the compiler/linker are not generating machine specific instructions. As far as I can tell, the program is being loaded into memory properly. One thing that I cannot do the way the book suggests, is assembling c0.asm. The book uses the commands: C>masm c0,c0t /ML /D__TINY__; C>masm c0,c0s /ML /D__SMALL__; When I run masm for the small module, the following is displayed: Microsoft (R) Macro Assembler Version 4.00 Copyright (C) Microsoft Corp 1981, 1983, 1984, 1985. All rights reserved. c0.ASM(312) : error 9: Symbol not defined CheckSum c0.ASM(314) : error 9: Symbol not defined lgth_NullCheck c0.ASM(315) : error 9: Symbol not defined NullCheck 43724 Bytes symbol space free 0 Warning Errors 3 Severe Errors The Turbo C supplied commands to rebuild c0t and c0s tell you to use the /MX option, not the /ML option. If /MX is used, there are no error messages displayed. In either case, the memory resident program does not work properly. Any suggestions would be greatly appreciated. -- Mark Regester Information Systems & Services, NCR E&M Wichita NCR:654-8340 <M.Regester@Wichita.NCR.COM> (316)636-8340 <{ece-csc,hubcap,gould,rtech}!ncrcae!ncrwic!m.regester> <{sdcsvax,cbatt,dcdwest,nosc.ARPA,ihnp4}!ncr-sd!ncrwic!m.regester>