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; Test of load opcodes
;
; Goes through most varieties of load opcode and tests for
; correct behavior.

    .module load_optest

;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
_sim_ctl_port   =       0x0080
_msg_port       =       0x0081
_timeout_port   =       0x0082
_max_timeout_low        =       0x0083
_max_timeout_high       =       0x0084
_intr_cntdwn    =       0x0090
_cksum_value    =       0x0091
_cksum_accum    =       0x0092
_inc_on_read    =       0x0093
stack_end       =       0xFFFF

    .area INIT (ABS)
    .org  0

    jp      init


init:
    ld      sp, #stack_end
    jp      start


passed:
                ld      a, #0x1
                out     (_sim_ctl_port), a
                halt

failed:
                ld      a, #0x2
                out     (_sim_ctl_port), a
                halt




        ;; subroutine to print a message
        ;; called from within the "print" macro
        ;; expects address to be printed in hl
        ;; preserves all other registers
print_sub:
        push    bc
        ld      b, a

print_sub_loop: 
        ld      a, (hl)
        cp      #0x0
        jp      z, print_sub_exit
        out     (_msg_port), a
        inc     hl
        jp      print_sub_loop
        
print_sub_exit:
        ld      a, b
        pop     bc
        ret

        ;; print a hex number between 0-255, stored in the A register
print_number:
        push    bc
        ld      b, a            ; store number to be printed in b

        and     #0xf0
        sra     a
        sra     a
        sra     a
        sra     a
        cp      a, #10
        jp      p, alpha_0
        add     #48             ; ordinal value of '0'
        out     (_msg_port), a
        jp      second_digit
alpha_0:
        add     #55              ; 'A' - 10
        out     (_msg_port), a

second_digit:   
        ld      a, b
        and     #0x0f
        
        cp      a, #10
        jp      p, alpha_1
        add     #48
        out     (_msg_port), a
        jp      print_number_exit

alpha_1:
        add     #55              ; 'A' - 10
        out     (_msg_port), a

print_number_exit:      
        pop     bc
        ret

fail_text: .ascii   "Test failed at checkpoint #"
        .db     #0x00

; expects failing message number in B
fail_routine:
        ld      hl, #fail_text
        call    print_sub       ; print out boilerplate text
        ld      a, b

        call    print_number    ; print out error number

        ld      a, #0x0a                ; print carriage return
        out     (_msg_port), a
        jp      failed
        


starting_test:  .ascii "Starting test"
        .db 0x0A
        .db 0x00

error_cnt:
        .db     0

        ;; Ordering of segments for the linker.
        .area   _HOME
        .area   _CODE
        .area   _GSINIT
        .area   _GSFINAL
        
        .area   _DATA
        .area   _BSS
        .area   _HEAP

        .area   _CODE

;------------------------------------------------------------
;   Beginning of test
;------------------------------------------------------------

start:

                ld      hl, #starting_test
                call    print_sub

                ld      a, #1
                ld      hl,#error_cnt
                ld      (hl),a                  ;clear error count
nop_1:          nop
                nop
                ;print "Starting ld tests"
ld_167:         ld      a,#0x55
                cp      #0x55
                jr      z,ld_1
        ld      b, #167
        jp      fail_routine
                
ld_1:           ld      b,#0x7F
                ld      a,#0x7F
                cp      b
                jr      z,ld_2
        ld      b, #1
        jp      fail_routine
ld_2:           ld      c,#0x80
                ld      a,#0x80
                cp      c
                jr      z,ld_3
        ld      b, #2
        jp      fail_routine
ld_3:           ld      d,#0xAA
                ld      a,#0xAA
                cp      d
                jr      z,ld_4
        ld      b, #3
        jp      fail_routine
ld_4:           ld      e,#0x55
                ld      a,#0x55
                cp      e
                jr      z,ld_5
        ld      b, #4
        jp      fail_routine
ld_5:           ld      h,#0x7F
                ld      a,#0x7F
                cp      h
                jr      z,ld_6
        ld      b, #5
        jp      fail_routine
ld_6:           ld      l,#0x80
                ld      a,#0x80
                cp      l
                jr      z,ld_7
        ld      b, #6
        jp      fail_routine
ld_7:           ld      a,#0x55
                ld      b,a
                cp      b
                jr      z,ld_8
        ld      b, #7
        jp      fail_routine
ld_8:           ld      c,b
                cp      c
                jr      z,ld_9
        ld      b, #8
        jp      fail_routine
ld_9:           ld      d,c
                cp      d
                jr      z,ld_10
        ld      b, #9
        jp      fail_routine
ld_10:          ld      e,d
                cp      e
                jr      z,ld_11
        ld      b, #10
        jp      fail_routine
ld_11:          ld      h,e
                cp      h
                jr      z,ld_12
        ld      b, #11
        jp      fail_routine
ld_12:          ld      l,h
                cp      l
                jr      z,ld_13
        ld      b, #12
        jp      fail_routine
ld_13:          ld      l,#0x80
                ld      a,l
                cp      l
                jr      z,ld_14
        ld      b, #13
        jp      fail_routine
ld_14:          ld      h,l
                cp      h
                jr      z,ld_15
        ld      b, #14
        jp      fail_routine
ld_15:          ld      e,h
                cp      e
                jr      z,ld_16
        ld      b, #15
        jp      fail_routine
ld_16:          ld      d,e
                cp      d
                jr      z,ld_17
        ld      b, #16
        jp      fail_routine
ld_17:          ld      c,d
                cp      c
                jr      z,ld_18
        ld      b, #17
        jp      fail_routine
ld_18:          ld      b,c
                cp      b
                jr      z,ld_19
        ld      b, #18
        jp      fail_routine
ld_19:          ld      hl,#var1
                ld      a,(hl)
                cp      #0xFF
                jr      z,ld_20
        ld      b, #19
        jp      fail_routine
ld_20:          ld      hl,#var2
                ld      a,#0x55
                ld      b,(hl)
                cp      b
                jr      z,ld_21
                ld      a, #20
                jp      fail_routine
        ld      b, #20
        jp      fail_routine
ld_21:          ld      hl,#var1
                ld      c,(hl)
                ld      a,(hl)
                cp      c
                jr      z,ld_22
        ld      b, #21
        jp      fail_routine
ld_22:          ld      hl,#var2
                ld      d,(hl)
                ld      a,(hl)
                cp      d
                jr      z,ld_23
        ld      b, #22
        jp      fail_routine
ld_23:          ld      hl,#var1
                ld      e,(hl)
                ld      a,(hl)
                cp      e
                jr      z,ld_24
        ld      b, #23
        jp      fail_routine
ld_24:          ld      hl,#var2
                ld      a,(hl)
                ld      h,(hl)
                cp      h
                jr      z,ld_25
        ld      b, #24
        jp      fail_routine
ld_25:          ld      hl,#var1
                ld      a,(hl)
                ld      l,(hl)
                cp      l
                jr      z,ld_26
        ld      b, #25
        jp      fail_routine
ld_26:          ld      ix,#var3
                ld      a,-2(ix)
                cp      #0xFF
                jr      z,ld_27
        ld      b, #26
        jp      fail_routine
ld_27:          ld      a,2(ix)
                cp      #0x7F
                jr      z,ld_28
        ld      b, #27
        jp      fail_routine
ld_28:          ld      a,-1(ix)
                ld      b,-1(ix)
                cp      b
                jr      z,ld_29
        ld      b, #28
        jp      fail_routine
ld_29:          cp      #0x55
                jr      z,ld_30
        ld      b, #29
        jp      fail_routine
ld_30:          ld      a,1(ix)
                ld      c,1(ix)
                cp      c
                jr      z,ld_31
        ld      b, #30
        jp      fail_routine
ld_31:          cp      #0xAA
                jr      z,ld_32
        ld      b, #31
        jp      fail_routine
ld_32:          ld      d,-2(ix)
                ld      a,-2(ix)
                cp      d
                jr      z,ld_33
        ld      b, #32
        jp      fail_routine
ld_33:          cp      #0xFF
                jr      z,ld_34
        ld      b, #33
        jp      fail_routine
ld_34:          ld      e,2(ix)
                ld      a,2(ix)
                cp      e
                jr      z,ld_35
        ld      b, #34
        jp      fail_routine
ld_35:          cp      #0x7F
                jr      z,ld_36
        ld      b, #35
        jp      fail_routine
ld_36:          ld      h,(ix)
                ld      a,(ix)
                cp      h
                jr      z,ld_37
        ld      b, #36
        jp      fail_routine
ld_37:          cp      #0x80
                jr      z,ld_38
        ld      b, #37
        jp      fail_routine
ld_38:          ld      l,-1(ix)
                ld      a,-1(ix)
                cp      l
                jr      z,ld_39
        ld      b, #38
        jp      fail_routine
ld_39:          cp      #0x55
                jr      z,ld_40
        ld      b, #39
        jp      fail_routine
ld_40:          ld      iy,#var3
                ld      a,-2(iy)
                cp      #0xFF
                jr      z,ld_41
        ld      b, #40
        jp      fail_routine
ld_41:          ld      a,2(iy)
                cp      #0x7F
                jr      z,ld_42
        ld      b, #41
        jp      fail_routine
ld_42:          ld      b,-1(iy)
                ld      a,-1(iy)
                cp      b
                jr      z,ld_43
        ld      b, #42
        jp      fail_routine
ld_43:          cp      #0x55
                jr      z,ld_44
        ld      b, #43
        jp      fail_routine
ld_44:          ld      c,1(iy)
                ld      a,1(iy)
                cp      c
                jr      z,ld_45
        ld      b, #44
        jp      fail_routine
ld_45:          cp      #0xAA
                jr      z,ld_46
        ld      b, #45
        jp      fail_routine
ld_46:          ld      d,-2(iy)
                ld      a,-2(iy)
                cp      d
                jr      z,ld_47
        ld      b, #46
        jp      fail_routine
ld_47:          cp      #0xFF
                jr      z,ld_48
        ld      b, #47
        jp      fail_routine
ld_48:          ld      e,2(iy)
                ld      a,2(iy)
                cp      e
                jr      z,ld_49
        ld      b, #48
        jp      fail_routine
ld_49:          cp      #0x7F
                jr      z,ld_50
        ld      b, #49
        jp      fail_routine
ld_50:
                ld      h,(iy)
                ld      a,(iy)
                cp      h
                jr      z,ld_51
        ld      b, #50
        jp      fail_routine
ld_51:          cp      #0x80
                jr      z,ld_52
        ld      b, #51
        jp      fail_routine
ld_52:          ld      l,-2(iy)
                ld      a,-2(iy)
                cp      l
                jr      z,ld_53
        ld      b, #52
        jp      fail_routine
ld_53:          cp      #0xFF
                jr      z,ld_54
        ld      b, #53
        jp      fail_routine
ld_54:          ld      hl,#t_var1
                ld      a,#0xAA+1
                ld      (hl),a
                ld      b,(hl)
                cp      b
                jr      z,ld_55
        ld      b, #54
        jp      fail_routine
ld_55:          cp      #0xAA+1
                jr      z,ld_56
        ld      b, #55
        jp      fail_routine
ld_56:          ld      b,#0x80+1
                ld      (hl),b
                ld      a,(hl)
                cp      b
                jr      z,ld_57
        ld      b, #56
        jp      fail_routine
ld_57:          cp      #0x80+1
                jr      z,ld_58
        ld      b, #57
        jp      fail_routine
ld_58:          ld      c,#0x55-1
                ld      (hl),c
                ld      a,(hl)
                cp      c
                jr      z,ld_59
        ld      b, #58
        jp      fail_routine
ld_59:          cp      #0x55-1
                jr      z,ld_60
        ld      b, #59
        jp      fail_routine
ld_60:          ld      d,#0xFF-1
                ld      (hl),d
                ld      a,(hl)
                cp      d
                jr      z,ld_61
        ld      b, #60
        jp      fail_routine
ld_61:          cp      #0xFF-1
                jr      z,ld_62
        ld      b, #61
        jp      fail_routine
ld_62:          ld      e,#0x55+1
                ld      (hl),e
                ld      a,(hl)
                cp      e
                jr      z,ld_63
        ld      b, #62
        jp      fail_routine
ld_63:          cp      #0x55+1
                jr      z,ld_64
        ld      b, #63
        jp      fail_routine
ld_64:          ld      (hl),h
                ld      a,(hl)
                cp      h
                jr      z,ld_65
        ld      b, #64
        jp      fail_routine
ld_65:          cp      #0x80           ;bjp  guess  >t_#var1
                jr      z,ld_66
        ld      b, #65
        jp      fail_routine
ld_66:          ld      (hl),l
                ld      a,(hl)
                cp      l
                jr      z,ld_67
        ld      b, #66
        jp      fail_routine
ld_67:          cp      a, #0x00                ;bjp  guess <t_#var1
                jr      z,ld_68
        ld      b, #67
        jp      fail_routine
ld_68:          ld      ix,#t_var3
                ld      a,#0x55
                ld      -2(ix),a
                ld      a,#0
                ld      a,-2(ix)
                cp      #0x55
                jr      z,ld_69
        ld      b, #68
        jp      fail_routine
ld_69:          ld      a,#0x80
                ld      2(ix),a
                ld      a,#0
                ld      a,2(ix)
                cp      #0x80
                jr      z,ld_70
        ld      b, #69
        jp      fail_routine
ld_70:          ld      b,#0x7F
                ld      -1(ix),b
                ld      a,-1(ix)
                cp      b
                jr      z,ld_71
        ld      b, #70
        jp      fail_routine
ld_71:          cp      #0x7F
                jr      z,ld_72
        ld      b, #71
        jp      fail_routine
ld_72:          ld      c,#0xAA
                ld      1(ix),c
                ld      a,1(ix)
                cp      c
                jr      z,ld_73
        ld      b, #72
        jp      fail_routine
ld_73:          cp      #0xAA
                jr      z,ld_74
        ld      b, #73
        jp      fail_routine
ld_74:          ld      d,#0x80
                ld      (ix),d
                ld      a,(ix)
                cp      d
                jr      z,ld_75
        ld      b, #74
        jp      fail_routine
ld_75:          cp      #0x80
                jr      z,ld_76
        ld      b, #75
        jp      fail_routine
ld_76:          ld      e,#0x55+2
                ld      -2(ix),e
                ld      a,-2(ix)
                cp      e
                jr      z,ld_77
        ld      b, #76
        jp      fail_routine
ld_77:          cp      #0x55+2
                jr      z,ld_78
        ld      b, #77
        jp      fail_routine
ld_78:          ld      h,#0xAA-2
                ld      2(ix),h
                ld      a,2(ix)
                cp      h
                jr      z,ld_79
        ld      b, #78
        jp      fail_routine
ld_79:          cp      #0xAA-2
                jr      z,ld_80
        ld      b, #79
        jp      fail_routine
ld_80:          ld      l,#0xAA+2
                ld      -1(ix),l
                ld      a,-1(ix)
                cp      l
                jr      z,ld_81
        ld      b, #80
        jp      fail_routine
ld_81:          cp      #0xAA+2
                jr      z,ld_82
        ld      b, #81
        jp      fail_routine
ld_82:          ld      iy,#t_var3
                ld      a,#0xFF
                ld      -2(iy),a
                ld      a,#0
                ld      a,-2(iy)
                cp      #0xFF
                jr      z,ld_83
        ld      b, #82
        jp      fail_routine
ld_83:          ld      a,#0x7F
                ld      2(iy),a
                ld      a,#0
                ld      a,2(iy)
                cp      #0x7F
                jr      z,ld_84
        ld      b, #83
        jp      fail_routine
ld_84:          ld      b,#0x55
                ld      -1(iy),b
                ld      a,-1(iy)
                cp      b
                jr      z,ld_85
        ld      b, #84
        jp      fail_routine
ld_85:          cp      #0x55
                jr      z,ld_86
        ld      b, #85
        jp      fail_routine
ld_86:          ld      c,#0xAA
                ld      1(iy),c
                ld      a,1(iy)
                cp      c
                jr      z,ld_87
        ld      b, #86
        jp      fail_routine
ld_87:          cp      #0xAA
                jr      z,ld_88
        ld      b, #87
        jp      fail_routine
ld_88:          ld      d,#0x80
                ld      (iy),d
                ld      a,(iy)
                cp      d
                jr      z,ld_89
        ld      b, #88
        jp      fail_routine
ld_89:          cp      #0x80
                jr      z,ld_90
        ld      b, #89
        jp      fail_routine
ld_90:          ld      e,#0xFF-2
                ld      -2(iy),e
                ld      a,-2(iy)
                cp      e
                jr      z,ld_91
        ld      b, #90
        jp      fail_routine
ld_91:          cp      #0xFF-2
                jr      z,ld_92
        ld      b, #91
        jp      fail_routine
ld_92:          ld      h,#0x7F-3
                ld      2(iy),h
                ld      a,2(iy)
                cp      h
                jr      z,ld_93
        ld      b, #92
        jp      fail_routine
ld_93:          cp      #0x7F-3
                jr      z,ld_94
        ld      b, #93
        jp      fail_routine
ld_94:          ld      l,#0x55-5
                ld      -1(iy),l
                ld      a,-1(iy)
                cp      l
                jr      z,ld_95
        ld      b, #94
        jp      fail_routine
ld_95:          cp      #0x55-5
                jr      z,ld_96
        ld      b, #95
        jp      fail_routine
ld_96:          ld      hl,#t_var1
                ld      (hl),#0x80+10
                ld      a,(hl)
                cp      #0x80+10
                jr      z,ld_97
        ld      b, #96
        jp      fail_routine
ld_97:          ld      ix,#t_var3
                ld      -2(ix),#0x55-10
                ld      a,-2(ix)
                cp      #0x55-10
                jr      z,ld_98
        ld      b, #97
        jp      fail_routine
ld_98:          ld      2(ix),#0x55+10
                ld      a,2(ix)
                cp      #0x55+10
                jr      z,ld_99
        ld      b, #98
        jp      fail_routine
ld_99:          ld      iy,#t_var2
                ld      -1(iy),#0x80+17
                ld      a,-1(iy)
                cp      #0x80+17
                jr      z,ld_100
        ld      b, #99
        jp      fail_routine
ld_100:
                ld      1(iy),#0x80-17
                ld      a,1(iy)
                cp      #0x80-17
                jr      z,ld_101
        ld      b, #100
        jp      fail_routine
ld_101:         ld      hl,#t_var5
                ld      bc,#t_var5
                ld      (hl),#0xAA-10
                ld      a,(bc)
                cp      #0xAA-10
                jr      z,ld_102
        ld      b, #101
        jp      fail_routine
ld_102:         ld      hl,#t_var3
                ld      de,#t_var3
                ld      (hl),#0xAA+10
                ld      a,(de)
                cp      #0xAA+10
                jr      z,ld_103
        ld      b, #102
        jp      fail_routine
ld_103:         ld      hl,#t_var2
                ld      (hl),#0x7F-25
                ld      a,(t_var2)
                cp      #0x7F-25
                jr      z,ld_104
        ld      b, #103
        jp      fail_routine
ld_104:         ld      hl,#t_var4
                ld      bc,#t_var4
                ld      a,#0x55-20
                ld      (bc),a
                ld      b,(hl)
                cp      b
                jr      z,ld_105
        ld      b, #104
        jp      fail_routine
ld_105:         ld      a,b
                cp      #0x55-20
                jr      z,ld_106
        ld      b, #105
        jp      fail_routine
ld_106:         ld      hl,#t_var5
                ld      de,#t_var5
                ld      a,#0x55+20
                ld      (de),a
                ld      c,(hl)
                cp      c
                jr      z,ld_107
        ld      b, #106
        jp      fail_routine
ld_107:         ld      a,c
                cp      #0x55+20
                jr      z,ld_108
        ld      b, #107
        jp      fail_routine
ld_108:         ld      hl,#t_var4
                ld      a,#0xFF-24
                ld      (t_var4),a
                ld      e,(hl)
                cp      e
                jr      z,ld_109
        ld      b, #108
        jp      fail_routine
ld_109:         ld      a,e
                cp      #0xFF-24
                jr      z,ld_110
        ld      b, #109
        jp      fail_routine

; commented out ld_110 so test can continue
; may depend on side-effect in original Z80
ld_110:         ld      a, #0x55
                jp      ld_125
;ld_110:                ld      a,#0x55
;               ld      i,a
;               ld      a,#0
;               ld      a,i
;               jr      nz,ld_111
        ld      b, #110
        jp      fail_routine
;ld_111:                jp      p,ld_112
        ld      b, #111
        jp      fail_routine
;ld_112:                cp      #0x55
;               jr      z,ld_113
        ld      b, #112
        jp      fail_routine
;ld_113:                ld      a,#0x80
;               ld      i,a
;               ld      a,#0
;               ld      a,i
;               jr      nz,ld_114
        ld      b, #113
        jp      fail_routine
;ld_114:                jp      m,ld_115
        ld      b, #114
        jp      fail_routine
;ld_115:                cp      #0x80
;               jr      z,ld_116
        ld      b, #115
        jp      fail_routine
;ld_116:                ld      a,#0
;               ld      i,a
;               ld      a,#0x55
;               ld      a,i
;               jr      z,ld_125
        ld      b, #116
        jp      fail_routine
;   refresh register not implemented    
;   test for ie ?  
;ld_117:                ld      a,#0x55
;               ld      r,a
;               ld      a,#0
;               ld      a,r
;               jp      p,ld_118
;               inc_error_cnt
;ld_118:                jr      nz,ld_119
;               inc_error_cnt
;ld_119:                ld      a,#0xFF
;               ld      r,a
;               ld      a,#0
;               ld      a,r
;               jp      m,ld_120
;               inc_error_cnt
;ld_120:                ld      a,4                     ;totally sequence dependent
;               ld      r,a
;               ld      a,#0x55
;               ld      a,r
;               jr      z,ld_121
;               inc_error_cnt
;ld_121:                ei                              ;set iff2
;               ld      a,i
;               jp      pe,ld_122               ;iff2 was set
;               inc_error_cnt
;ld_122:                di                              ;clear iff2
;               ld      a,i
;               jp      po,ld_123               ;iff2 was cleared
;               inc_error_cnt
;ld_123:                ei                              ;set iff2
;               ld      a,r
;               jp      pe,ld_124               ;iff2 was set
;               inc_error_cnt
;ld_124:                di                              ;clear iff2
;               ld      a,r
;               jp      po,ld_125               ;iff2 was cleared
;               inc_error_cnt
;
ld_125:         ld      bc,#0x1234
                ld      a, #0x12                        ;bjp  guess >data_1234
                cp      b
                jr      z,ld_126
        ld      b, #125
        jp      fail_routine
ld_126:         ld      a, #0x34                        ;bjp  guess  <data_1234
                cp      c
                jr      z,ld_127
        ld      b, #126
        jp      fail_routine
ld_127:         ld      de,#0x55aa
                ld      a,#0x55
                cp      d
                jr      z,ld_128
        ld      b, #127
        jp      fail_routine
ld_128:         ld      a,#0xAA
                cp      e
                jr      z,ld_129
        ld      b, #128
        jp      fail_routine
ld_129:         ld      hl,#0x7Fff
                ld      a,#0x7F
                cp      h
                jr      z,ld_130
        ld      b, #129
        jp      fail_routine
ld_130:         ld      a,#0xFF
                cp      l
                jr      z,ld_131
        ld      b, #130
        jp      fail_routine
ld_131:         ld      sp,#0xAA55
                ld      hl,#0
                add     hl,sp
                ld      a,#0xAA
                cp      h
                jr      z,ld_132
        ld      b, #131
        jp      fail_routine
ld_132:         ld      a,#0x55
                cp      l
                jr      z,ld_133
        ld      b, #132
        jp      fail_routine
ld_133:         ld      ix,#0xFFff
                ld      hl,#0
                ld      sp,ix
                add     hl,sp
                ld      a,#0xFF
                cp      h
                jr      z,ld_134
        ld      b, #133
        jp      fail_routine
ld_134:         cp      l
                jr      z,ld_135
        ld      b, #134
        jp      fail_routine
ld_135:         ld      iy,#0x1234
                ld      hl,#0
                ld      sp,iy
                add     hl,sp
                ld      a,#0x12      ;bjp was >data_1234
                cp      h
                jr      z,ld_136
        ld      b, #135
        jp      fail_routine
ld_136:         ld      a,#0x34      ;bjp was >data_1234
                cp      l
                jr      z,ld_137
        ld      b, #136
        jp      fail_routine
ld_137:         ld      hl,(#w_var2)   ;gth changed from ,(w_var2)
                ld      a,#0x55
                cp      h
                jr      z,ld_138
        ld      b, #137
        jp      fail_routine
ld_138:         ld      a,#0xAA
                cp      l
                jr      z,ld_139
        ld      b, #138
        jp      fail_routine
ld_139:         ld      bc,(#w_var1)   ;gth changed from ,(w_var1)
                ld      a,#0x12      ;bjp was >data_1234
                cp      b
                jr      z,ld_140
        ld      b, #139
        jp      fail_routine
ld_140:         ld      a,#0x34      ;bjp was >data_1234
                cp      c
                jr      z,ld_141
        ld      b, #140
        jp      fail_routine
ld_141:         ld      de,(w_var3)
                ld      a,#0x7F
                cp      d
                jr      z,ld_142
        ld      b, #141
        jp      fail_routine
ld_142:         ld      a,#0xFF
                cp      e
                jr      z,ld_143
        ld      b, #142
        jp      fail_routine
ld_143:         ld      hl,(w_var4)
                ld      a,#0x80
                cp      h
                jr      z,ld_144
        ld      b, #143
        jp      fail_routine
ld_144:         ld      a,#0
                cp      l
                jr      z,ld_145
        ld      b, #144
        jp      fail_routine
ld_145:         ld      sp,(w_var5)
                ld      hl,#0
                add     hl,sp
                ld      a,#0xAA
                cp      h
                jr      z,ld_146
        ld      b, #145
        jp      fail_routine
ld_146:         ld      a,#0x55
                cp      l
                jr      z,ld_147
        ld      b, #146
        jp      fail_routine
ld_147:         ld      ix,(w_var6)
                ld      hl,#0
                ld      sp,ix
                add     hl,sp
                ld      a,#0xFF
                cp      h
                jr      z,ld_148
        ld      b, #147
        jp      fail_routine
ld_148:         cp      l
                jr      z,ld_149
        ld      b, #148
        jp      fail_routine
ld_149:         ld      iy,(#w_var1)
                ld      hl,#0
                ld      sp,iy
                add     hl,sp
                ld      a,#0x12      ;bjp was >data_1234
                cp      h
                jr      z,ld_150
        ld      b, #149
        jp      fail_routine
ld_150:         
                ld      sp, #stack_end ; reset stack pointer to EOM
                ld      a,#0x34      ;bjp was >data_1234
                cp      l
                jr      z,ld_151
        ld      b, #150
        jp      fail_routine
ld_151:         ld      hl,#0x1234
                ld      (#tw_var1),hl
                ld      bc,(#tw_var1)
                ld      a,#0x12      ;bjp was >data_1234
                cp      b
                jr      z,ld_152
        ld      b, #151
        jp      fail_routine
ld_152:         ld      a,#0x34      ;bjp was >data_1234
                cp      c
                jr      z,ld_153
        ld      b, #152
        jp      fail_routine
ld_153:         ld      bc,#0x55aa
                ld      (#tw_var2),bc
                ld      hl,(#tw_var2)
                ld      a,#0x55
                cp      h
                jr      z,ld_154
        ld      b, #153
        jp      fail_routine
ld_154:         ld      a,#0xAA
                cp      l
                jr      z,ld_155
        ld      b, #154
        jp      fail_routine
ld_155:         ld      de,#0x7Fff
                ld      (tw_var3),de
                ld      hl,(tw_var3)
                ld      a,#0x7F
                cp      h
                jr      z,ld_156
        ld      b, #155
        jp      fail_routine
ld_156:         ld      a,#0xFF
                cp      l
                jr      z,ld_157
        ld      b, #156
        jp      fail_routine
ld_157:         ld      hl,#0x8000
                ld      (tw_var4),hl
                ld      bc,(tw_var4)
                ld      a,#0x80
                cp      b
                jr      z,ld_158
        ld      b, #157
        jp      fail_routine
ld_158:         ld      a,#0
                cp      c
                jr      z,ld_159
        ld      b, #158
        jp      fail_routine
ld_159:         ld      sp,#0xAA55
                ld      (tw_var5),sp
                ld      hl,(tw_var5)
                ld      a,#0xAA
                cp      h
                jr      z,ld_160
        ld      b, #159
        jp      fail_routine
ld_160:         ld      a,#0x55
                cp      l
                jr      z,ld_161
        ld      b, #160
        jp      fail_routine
ld_161:         ld      ix,#0xFFff
                ld      (tw_var6),ix
                ld      hl,(tw_var6)
                ld      a,#0xFF
                cp      h
                jr      z,ld_162
        ld      b, #161
        jp      fail_routine
ld_162:         cp      l
                jr      z,ld_163
        ld      b, #162
        jp      fail_routine
ld_163:         ld      iy,#0x1234
                ld      (tw_var7),iy
                ld      hl,(tw_var7)
                ld      a,#0x12      ;bjp was >data_1234
                cp      h
                jr      z,ld_164
        ld      b, #163
        jp      fail_routine
ld_164:         ld      a,#0x34      ;bjp was >data_1234
                cp      l
                jr      z,ld_165
        ld      b, #164
        jp      fail_routine
ld_165:         ld      hl,#0x55aa
                ld      sp,hl
                ld      hl,#0
                add     hl,sp
                ld      a,#0x55
                cp      h
                jr      z,ld_166
        ld      b, #165
        jp      fail_routine
ld_166:         ld      a,#0xAA
                cp      l
                jr      z,end_of_test
        ld      b, #166
        jp      fail_routine
end_of_test:

        jp      passed


var1:           .db     #0xFF
var2:           .db     #0x55
var3:           .db     #0x80
var4:           .db     #0xAA
var5:           .db     #0x7F

w_var1:         .dw     #0x1234
w_var2:         .dw     #0x55aa
w_var3:         .dw     #0x7fff
w_var4:         .dw     #0x8000
w_var5:         .dw     #0xaa55
w_var6:         .dw     #0xffff

.area    _DATA


t_var1:         .db     0
t_var2:         .db     0
t_var3:         .db     0
t_var4:         .db     0
t_var5:         .db     0


tw_var1:        .dw     0
tw_var2:        .dw     0
tw_var3:        .dw     0
tw_var4:        .dw     0
tw_var5:        .dw     0
tw_var6:        .dw     0
tw_var7:        .dw     0