;; few more test cases not covered by regular tests,
 
    ;; but were discovered by code coverage as code not executed in tests
 
 
 
    ; some tests need more strict syntax rules to hit specific code paths
 
    OPT reset --syntax=ab --zxnext
 
 
 
    add     hl,[1234        ; "Operand expected" error
 
 
 
    brlc    hl,b            ; "only DE,B arguments" error
 
    bsla    hl,b
 
    bsra    hl,b
 
    bsrl    hl,b
 
    bsrf    hl,b
 
    nextreg a,$1            ; "first operand should be register number" error
 
 
 
    OPT reset --syntax=ab   ; disable Z80N extensions for "Z80N disabled" error
 
    brlc    de,b
 
    bsla    de,b
 
    bsra    de,b
 
    bsrl    de,b
 
    bsrf    de,b
 
    lddrx
 
    lddx
 
    ldirx
 
    ldix
 
    ldpirx
 
    ldws
 
    mul     de
 
    nextreg $1,$2
 
    nextreg $3,a
 
    outinb
 
    pixelad
 
    pixelad hl
 
    pixeldn
 
    pixeldn hl
 
    setae
 
    setae   a
 
    swapnib
 
    swapnib a
 
    test    1
 
 
 
    ;; part 3 (new commit, focusing on branching in the code, exercising more combinations and code paths)
 
    ; these tests (whole this file) are unfortunately very implementation based, in case of major refactorings they may
 
    ; quickly lose their functionality (the machine code produced should be the same, but code coverage may regress).
 
 
 
    add     hl,1234
 
    add     hl,a
 
    push    1234
 
 
 
    ;; part 4 (more of the branching stuff, handpicked from local detailed coverage report)
 
 
 
    OPT reset --syntax=ab --zxnext
 
    add     de,b
 
    bsra    de
 
    bsra    de,a
 
    brlc    de
 
    brlc    de,
 
    brlc    de,a
 
 
 
    OPT reset --syntax=abF --zxnext
 
    mul
 
    mul     d
 
    mul     d,c