Hello Hector Peraza,

while M80.COM handles 8bit references correctly (see attachment testm80.prn), ZSM4 generates the error "R" (see testzsm4.prn). The listing test2.prn shows the second file in which the variable "ValNum" is defined, which is referenced by TESTM80.MAC and TESTZSM4.MAC. When I link TESTM80.REL and TEST2.REL to TESTX.COM/TESTX.SYM with L80.COM, ZSID.TXT shows the correct use of "ValNum" (value 10H).

It seems that ZSM4 version 4.7 does not correctly handle the use of 8Bit (LOW) from the Extrn defined 16Bit variable "ValNum", which however the M80.COM/L80.COM and also the SLR180.COM/SLRNK.COM can do correctly.

Otherwise, I would like to thank you for your valuable work on ZSM4, it is a great contribution to the open source community. I use ZSM4 under my Z80 emulator "YAZE-AG" (Yet Another Z80 Emulator by AG, www.yaze-ag.de and also here on guthub.com) and on my real Z280 machine "CPU280" by
test2.txt
testm80.txt
testzsm4.txt
zsid.txt
Tilmann Reh (Germany).

Best regards
Andreas Gerlich (agl7, IRCNet: agl, Libera.Chat: agl)
(University of Ulm, Germany)