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# Test t7922: Compile to MZ in SMALL model

Description
  Executable MZ program with segments [CODE],[RODATA],[DATA],[BSS],[STACK]. In FARCODE memory models (COMPACT|LARGE|HUGE) instructions CALL and RET are by default FAR. In FARDATA memory models (MEDIUM|LARGE|HUGE) access to each data segment requires to update DS.
See also
  t7921 t7922 t7923 t7924 t7925 t7926
Tested procedures
  PfomfCompile PfmzCompile PfomfLoadPgm PgmLink

Source & expected listing t7922.htm.lst
  `| | EUROASM AUTOSEGMENT=ON,CPU=086,DUMPWIDTH=24 |7437393232 |%TEST %SET t7922 ; Name of EuroAssembler test program. |534D414C4C |%MODEL %SET SMALL ; Memory model of the test program and its modules. |30 |%FARDATA %SETB "%MODEL"=="COMPACT" || "%MODEL"=="LARGE" || "%MODEL"=="HUGE" | |;; Boolean var %FARDATA is set when each of [RODATA],[DATA],[BSS] requires its own segment address. | |;; | |;; Create the first auxilliary OMF module with functions Write.D16 and Beep.D16. | |%TEST.WB PROGRAM FORMAT=OMF,MODEL=%MODEL |[CODE] ::::Section changed. |0000: |Write.D16:: PROC ; Display ASCIIZ string pointed to by DS:SI using DOS. |0000:B402 | MOV AH,02h ; DOS service Write character form DL to standard output. |0002:FC | CLD ; Direction forward. |0003:AC |.1:LODSB ; Load a character from string to AL, increment SI. |0004:3C00 | CMP AL,0 ; Test if zero-terminator reached. |0006:7406 | JE .9: ; Exit the procedure if AL=0. |0008:88C2 | MOV DL,AL |000A:CD21 | INT 21h ; Otherwise display the character AL and advance screen cursor. |000C:EBF5 | JMP .1: ; Repeat with following characters. |000E:C3 |.9:RET ; AX,DL,SI are clobbered. |000F: | ENDP Write.D16:: | |;; |000F: |Beep.D16:: PROC ; Display message "Beeping.." and play a sound using DOS. |000F:BE[0000] | MOV SI,=B"Beeping..." ; Define a literal string in [RODATA]. |FALSE | %IF %FARDATA | | MOV AX,PARA# =B"Beeping..." | | MOV DS,AX ; Paragraph address of literal segment [RODATA]. | | %ENDIF |0012:E8EBFF | CALL Write.D16:: ; Display the notification "Beeping...". |0015:BE[0000] | MOV SI,=W(0x0007) ; Define ASCIIZ string with BEL character in [RODATA]. |0018:E8E5FF | CALL Write.D16:: ; Play the beep sound. |001B:C3 | RET ; AX,DL,SI are clobbered. |001C: | ENDP Beep.D16:: |[@LT2] ====ListLiterals in section [@LT2]. |0000:0700 =W(0x0007) |[@LT1] ====ListLiterals in section [@LT1]. |0000:42656570696E672E~=B"Beeping..." | | ENDPROGRAM %TEST.WB | **** ListMap "t7922.WB.obj",model=SMALL,groups=2,segments=2,entry=,stack= | [CGROUP],FA=0000008Eh,RVA=00000000h,size=0000001Ch=28,group [CODE] | [CODE],FA=0000008Eh,RVA=00000000h,size=0000001Ch=28,width=16,align=0010h,purpose=CODE | [DGROUP],FA=000000BFh,RVA=00000000h,size=0000000Dh=13,group [RODATA] | [RODATA],FA=000000BFh,RVA=00000000h,size=0000000Dh=13,width=16,align=0010h,purpose=RODATA+LITERAL | **** ListGlobals "t7922.WB.obj",Global=0,Public=2,Extern=0,eXport=0,Import=0 | Beep.D16,[CGROUP]:0000000Fh,scope='P' | Write.D16,[CGROUP]:00000000h,scope='P' | |;; | |;; Create other auxilliary OMF module with function Exit.D16. | |%TEST.EX PROGRAM FORMAT=OMF,MODEL=%MODEL |[CODE] ::::Section changed. |0000: |Exit.D16:: PROC ; Display message "End", terminate the program and return to DOS. |0000:BE[0000] | MOV SI,.M: ; String "End" will be defined in segment [BSS] at DS:SI. |FALSE | %IF %FARDATA | | MOV AX,PARA# .M: | | MOV DS,AX ; Paragraph address of segment [BSS]. | | %ENDIF |0003:C704456E | MOVW [SI+0],"En" ; Dynamically initialize the notification string. |0007:C744026420 | MOVW [SI+2],"d " ; Assume DS=PARA# [BSS]. |000C:C744040D0A | MOVW [SI+4],0x0A0D ; CR+LF. |0011:C6440600 | MOVB [SI+6],0 ; Zero-terminate the notiofication string. |0015:E8(0000) | CALL Write.D16:: ; Display the notification "End". |0018:B44C | MOV AH,4Ch ; DOS service Terminate program. |001A:CD21 | INT 21h |[BSS] ::::Section changed. |0000:.............. |.M:DB 7*BYTE ; Reserve space for ASCIIZ string "End" in [BSS] segment. |[CODE] ::::Section changed. |001C: | ENDP Exit.D16:: | | ENDPROGRAM %TEST.EX | **** ListMap "t7922.EX.obj",model=SMALL,groups=2,segments=2,entry=,stack= | [CGROUP],FA=00000087h,RVA=00000000h,size=0000001Ch=28,group [CODE] | [CODE],FA=00000087h,RVA=00000000h,size=0000001Ch=28,width=16,align=0010h,purpose=CODE | [DGROUP],FA=00000000h,RVA=00000000h,size=00000007h=7,group [BSS] | [BSS],FA=00000000h,RVA=00000000h,size=00000007h=7,width=16,align=0010h,purpose=BSS | **** ListGlobals "t7922.EX.obj",Global=0,Public=1,Extern=1,eXport=0,Import=0 | Exit.D16,[CGROUP]:00000000h,scope='P' | Write.D16,[Write.D16]:00000000h,scope='E' | |;; | |;; Create the main program which links auxilliary OMF modules. | |%TEST PROGRAM FORMAT=MZ, MODEL=%MODEL, ENTRY=Start |[CODE] ::::Section changed. |0000:90 |Start:NOP |0001:BE[0000] | MOV SI,Msg |0004:B8{0000} | MOV AX,PARA# Msg ; MZ program requires paragraph address of [DATA] segment |0007:8ED8 | MOV DS,AX ; in all realmode models, including TINY. |0009:E8(0000) | CALL Write.D16:: |000C:E8(0000) | CALL Beep.D16:: |000F:E8(0000) | CALL Exit.D16:: | | LINK %TEST.WB.obj, %TEST.EX.obj |[DATA] ::::Section changed. |0000:313662697420534D~|Msg:DB '%^WIDTH[]bit %MODEL MZ program "%^OUTFILE" linked',13,10 |002B:207769746820534D~| DB ' with %MODEL OMF module "%TEST.WB.obj" and "%TEST.EX.obj".',13,10,0 | | ENDPROGRAM %TEST |# I0560 Linking OMF module "./t7922.WB.obj". |# I0560 Linking OMF module "./t7922.EX.obj". | **** ListMap "t7922.exe",model=SMALL,groups=3,segments=5,entry=Start,stack=[SGROUP]:00002000h | [CGROUP],FA=00000060h,RVA=00000000h,size=0000005Ch=92,group [CODE] | [CODE],FA=00000060h,RVA=00000000h,size=0000005Ch=92,width=16,align=0010h,purpose=CODE | [DGROUP],FA=000000C0h,RVA=00000060h,size=00000087h=135,group [RODATA] [DATA] [BSS] | [RODATA],FA=000000C0h,RVA=00000060h,size=0000000Dh=13,width=16,align=0010h,purpose=RODATA | [DATA],FA=000000D0h,RVA=00000070h,size=00000067h=103,width=16,align=0010h,purpose=DATA | [BSS],FA=00000140h,RVA=000000E0h,size=00000007h=7,width=16,align=0010h,purpose=BSS | [SGROUP],FA=00000140h,RVA=000000F0h,size=00002000h=8192,group [STACK] | [STACK],FA=00000140h,RVA=000000F0h,size=00002000h=8192,width=16,align=0010h,purpose=STACK | **** ListGlobals "t7922.exe",Global=0,Public=4,Extern=0,eXport=0,Import=0 | Beep.D16,[CGROUP]:0000002Fh,RVA=0000002Fh,scope='P' | Exit.D16,[CGROUP]:00000040h,RVA=00000040h,scope='P' | Start,[CGROUP]:00000000h,RVA=00000000h,scope='P' | Write.D16,[CGROUP]:00000020h,RVA=00000020h,scope='P'`

Expected messages t7922.out
  `I0180 Assembling source file "t7922.htm". I0270 Assembling source "t7922". I0310 Assembling source pass 1. I0330 Assembling source pass 2 - final. I0470 Assembling program "t7922.WB". "t7922.htm"{89} I0510 Assembling program pass 1. "t7922.htm"{89} I0510 Assembling program pass 2. "t7922.htm"{89} I0530 Assembling program pass 3 - final. "t7922.htm"{89} I0660 16bit SMALL OMF file "t7922.WB.obj" created, size=216. "t7922.htm"{118} I0650 Program "t7922.WB" assembled in 3 passes with errorlevel 0. "t7922.htm"{118} I0470 Assembling program "t7922.EX". "t7922.htm"{129} I0510 Assembling program pass 1. "t7922.htm"{129} I0510 Assembling program pass 2. "t7922.htm"{129} I0530 Assembling program pass 3 - final. "t7922.htm"{129} I0660 16bit SMALL OMF file "t7922.EX.obj" created, size=187. "t7922.htm"{148} I0650 Program "t7922.EX" assembled in 3 passes with errorlevel 0. "t7922.htm"{148} I0470 Assembling program "t7922". "t7922.htm"{159} I0510 Assembling program pass 1. "t7922.htm"{159} I0510 Assembling program pass 2. "t7922.htm"{159} I0530 Assembling program pass 3 - final. "t7922.htm"{159} I0560 Linking OMF module "./t7922.WB.obj". "t7922.htm"{172} I0560 Linking OMF module "./t7922.EX.obj". "t7922.htm"{172} I0660 16bit SMALL MZ file "t7922.exe" created, size=311. "t7922.htm"{172} I0650 Program "t7922" assembled in 3 passes with errorlevel 0. "t7922.htm"{172} I0750 Source "t7922" (245 lines) assembled in 2 passes with errorlevel 0. I0860 Listing file "t7922.htm.lst" created, size=7717. I0990 EuroAssembler terminated with errorlevel 0.`

Expected output file t7922. exe

      0000: 4D 5A 37 01 01 00 01 00 06 00 02 02 FF FF 0F 00  MZ7··°·°·°··¤¤·°
      0010: 00 20 1E 82 00 00 00 00 40 00 00 00 00 00 00 00  °¯·¤°°°°@°°°°°°°
      0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  °°°°°°°°°°°°°°°°
      0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  °°°°°°°°°°°°°°°°
      0040: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ·°°°°°°°°°°°°°°°
      0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  °°°°°°°°°°°°°°°°
      0060: 90 BE 10 00 B8 06 00 8E D8 E8 14 00 E8 20 00 E8  ¤¤·°¤·°¤¤¤·°¤¯°¤
      0070: 2E 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90  .°¤¤¤¤¤¤¤¤¤¤¤¤¤¤
      0080: B4 02 FC AC 3C 00 74 06 88 C2 CD 21 EB F5 C3 BE  ¤·¤¤<°t·¤¤¤!¤¤¤¤
      0090: 02 00 E8 EB FF BE 00 00 E8 E5 FF C3 90 90 90 90  ·°¤¤¤¤°°¤¤¤¤¤¤¤¤
      00A0: BE 80 00 C7 04 45 6E C7 44 02 64 20 C7 44 04 0D  ¤¤°¤·En¤D·d¯¤D··
      00B0: 0A C6 44 06 00 E8 C8 FF B4 4C CD 21 00 00 00 00  ¬¤D·°¤¤¤¤L¤!°°°°
      00C0: 07 00 42 65 65 70 69 6E 67 2E 2E 2E 00 00 00 00  ·°Beeping...°°°°
      00D0: 31 36 62 69 74 20 53 4D 41 4C 4C 20 4D 5A 20 70  16bit¯SMALL¯MZ¯p
      00E0: 72 6F 67 72 61 6D 20 22 74 37 39 32 32 2E 65 78  rogram¯"t7922.ex
      00F0: 65 22 20 6C 69 6E 6B 65 64 0D 0A 20 77 69 74 68  e"¯linked·¬¯with
      0100: 20 53 4D 41 4C 4C 20 4F 4D 46 20 6D 6F 64 75 6C  ¯SMALL¯OMF¯modul
      0110: 65 20 22 74 37 39 32 32 2E 57 42 2E 6F 62 6A 22  e¯"t7922.WB.obj"
      0120: 20 61 6E 64 20 22 74 37 39 32 32 2E 45 58 2E 6F  ¯and¯"t7922.EX.o
      0130: 62 6A 22 2E 0D 0A 00                             bj".·¬°

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