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        ; Modular address postincrement/postdecrement test
        
start:  
        ;  program PSW for modular address mode
        add  r1,r0,0x81000000
        nop || nop
        mvtsys psw,r1 || nop
        nop || nop
        
test1:  
        ; set modular address limits: 0x18 bytes
        add  r1,r0,0x20000070    ; [start, ...
        nop || nop
        mvtsys mod_s,r1 || nop
        nop || nop
        add  r1,r0,0x20000088    ; ..., end)
        nop || nop
        mvtsys mod_e,r1 || nop

        ; modular autoincrement test
        add     r30,r0,0x20000070 ; base address = mod_s
        ld2w    r40,@(r30+,r0) || nop ; after:     r30 = ...078
        ld2w    r40,@(r30+,r0) || nop ; after:  r30 = ...080
        ld2w    r40,@(r30+,r0) || nop ; after:  r30 = ...070
        
        add     r29,r0,0x20000070 ; expected end address; wrapping around
        cmpeq   f1,r30,r29
        bra/xf  fail

test2:  
        ; set modular address limits: 0x18 bytes
        add  r1,r0,0x20000088    ; [start, ...
        nop || nop
        mvtsys mod_s,r1 || nop
        nop || nop
        add  r1,r0,0x20000070    ; ..., end)
        nop || nop
        mvtsys mod_e,r1 || nop

        ; modular autodecrement test
        add     r30,r0,0x20000088 ; base address = mod_s
        ld2w    r40,@(r30-,r0) || nop ; after:  r30 = ...080
        ld2w    r40,@(r30-,r0) || nop ; after:  r30 = ...078
        ld2w    r40,@(r30-,r0) || nop ; after:  r30 = ...088
        
        add     r29,r0,0x20000088 ; expected end address; wrapping around
        cmpeq   f1,r30,r29
        bra/xf  fail
        
ok:     
        add     r2,r0,0 
        .long   0x0e000004, 0x00f00000
                
fail:   
        add     r2,r0,47        
        .long   0x0e000004, 0x00f00000