The Switch_ (https://www.jj2007.eu/MasmBasicQuickReference.htm#Mb1285) macro is one of 28 macros that are identical in standard 32-bit MasmBasic and 64-/32-bit JBasic:
include \Masm32\MasmBasic\Res\JBasic.inc ; ## console demo, builds in 32- or 64-bit mode with UAsm, ML, AsmC ##
Init ; OPT_64 1 ; put 0 for 32 bit, 1 for 64 bit assembly; click here for an example with procs
Cls 3
PrintLine Chr$("This program was assembled with ", @AsmUsed$(1), " in ", jbit$, "-bit format.")
Print ComCtl32$("It uses common controls version %i.%i\n") ; see XP below
or ebx, -1
@@: Print Str$("ebx=%i\t", rbx)
mov ecx, 7
Switch_ rbx
Case_ 0
PrintLine "Case zero"
Case_ 9
PrintLine "Case 9"
Case_ 3..5
PrintLine "Case three to five"
Case_ ecx
PrintLine "Case ecx"
Default_
PrintLine "Default"
Endsw_
inc ebx
cmp ebx, 10
jbe @B
jinvoke MessageBox, 0, Chr$("JBasic is fantastic"), Chr$("Hello"), MB_OK or MB_SETFOREGROUND
EndOfCode
This program was assembled with ml64 in 64-bit format.
It uses common controls version 6.16
ebx=-1 Default
ebx=0 Case zero
ebx=1 Default
ebx=2 Default
ebx=3 Case three to five
ebx=4 Case three to five
ebx=5 Case three to five
ebx=6 Default
ebx=7 Case ecx
ebx=8 Default
ebx=9 Case 9
ebx=10 Default
This program was assembled with ML in 32-bit format.
It uses common controls version 6.16
ebx=-1 Default
ebx=0 Case zero
ebx=1 Default
ebx=2 Default
ebx=3 Case three to five
ebx=4 Case three to five
ebx=5 Case three to five
ebx=6 Default
ebx=7 Case ecx
ebx=8 Default
ebx=9 Case 9
ebx=10 Default
Note the complicated cmp ebx, 10 ... jbe @B construct. It's to make ML64 happy (UAsm and AsmC do have .Repeat ... .Until) :cool: