- .data
+.define atof
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+.sect .text
+ .sect .data
! Set of variables
-big: .byte 0
- .byte 0
- .byte 0x40
- .byte 24 ! 2^23
+big: .data1 0
+ .data1 0
+ .data1 0x40
+ .data1 24 ! 2^23
negfrac:.space 1
negexp: .space 1
begzero:
flexp: .space 4
exp5: .space 4
endzero:
-ten: .byte 0
- .byte 0
- .byte 0x50
- .byte 4 ! 10
-dig: .byte 0
- .byte 0
-fildig: .byte 0 ! here a number from 0 to 31 will be converted flt.
- .byte 7
+ten: .data1 0
+ .data1 0
+ .data1 0x50
+ .data1 4 ! 10
+dig: .data1 0
+ .data1 0
+fildig: .data1 0 ! here a number from 0 to 31 will be converted flt.
+ .data1 7
bexp: .space 2
- .text
+ .sect .text
atof: ! entry with stringpointer in hl
! exit with pointer to float in hl
push ix
1: bit 0,l
jr z,2f
call xflt
- .word flexp,exp5,fpmult,4,flexp
+ .data2 flexp,exp5,fpmult,4,flexp
2: sra h
rr l
ld a,h
or l
jr z,3f
call xflt
- .word exp5,exp5,fpmult,4,exp5
+ .data2 exp5,exp5,fpmult,4,exp5
jr 1b
3: ld hl,negexp
ld a,(bexp)
bit 7,(hl)
jr z,1f
call xflt
- .word flexp,fl,fpdiv,4,fl
+ .data2 flexp,fl,fpdiv,4,fl
neg
jr 2f
1: call xflt
- .word flexp,fl,fpmult,4,fl
+ .data2 flexp,fl,fpmult,4,fl
2: ld b,a
ld a,(fl+3)
add a,b
bit 7,a
jr z,1f
call xflt
- .word fl,fl,fpcomp,4,fl
+ .data2 fl,fl,fpcomp,4,fl
1: call xflt
- .word fl,fl,fpnorm,4,fl
+ .data2 fl,fl,fpnorm,4,fl
ld hl,fl
pop af
pop de
cmpbigfl:
call xflt
- .word big,fl,fpcmf,0
+ .data2 big,fl,fpcmf,0
ld a,(fpac+1)
bit 7,a
ret
mulandadd:
call xflt
- .word fl,ten,fpmult,4,fl
+ .data2 fl,ten,fpmult,4,fl
ld a,7
ld (fildig+1),a
call xflt
- .word dig,dig,fpnorm,4,dig
+ .data2 dig,dig,fpnorm,4,dig
call xflt
- .word fl,dig,fpadd,4,fl
+ .data2 fl,dig,fpadd,4,fl
ret
xflt:
pop af
ex (sp),iy
ret
+.align 256
#
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+.sect .text
! This program is an EM interpreter for the Z80.
! Register pair bc is used to hold lb.
! Register ix is used to hold the EM program counter.
!--------------------------- Initialization ---------------------------
- .base 0x100
-
jp init ! 3 byte instruction.
!------------------------- MAIN DISPATCH ------------------------------
! must be put on a page boundary
-dispat = . - 3 ! base of dispatch table
-! .byte loc.0 /256
-! .byte loc.1 /256
-! .byte loc.2 /256
- .byte loc.3 /256
- .byte loc.4 /256
- .byte loc.5 /256
- .byte loc.6 /256
- .byte loc.7 /256
- .byte loc.8 /256
- .byte loc.9 /256
- .byte loc.10 /256
- .byte loc.11 /256
- .byte loc.12 /256
- .byte loc.13 /256
- .byte loc.14 /256
- .byte loc.15 /256
- .byte loc.16 /256
- .byte loc.17 /256
- .byte loc.18 /256
- .byte loc.19 /256
- .byte loc.20 /256
- .byte loc.21 /256
- .byte loc.22 /256
- .byte loc.23 /256
- .byte loc.24 /256
- .byte loc.25 /256
- .byte loc.26 /256
- .byte loc.27 /256
- .byte loc.28 /256
- .byte loc.29 /256
- .byte loc.30 /256
- .byte loc.31 /256
- .byte loc.32 /256
- .byte loc.33 /256
- .byte aar.2 /256
- .byte adf.s0 /256
- .byte adi.2 /256
- .byte adi.4 /256
- .byte adp.l /256
- .byte adp.1 /256
- .byte adp.2 /256
- .byte adp.s0 /256
- .byte adp.sm1 /256
- .byte ads.2 /256
- .byte and.2 /256
- .byte asp.2 /256
- .byte asp.4 /256
- .byte asp.6 /256
- .byte asp.8 /256
- .byte asp.10 /256
- .byte asp.w0 /256
- .byte beq.l /256
- .byte beq.s0 /256
- .byte bge.s0 /256
- .byte bgt.s0 /256
- .byte ble.s0 /256
- .byte blm.s0 /256
- .byte blt.s0 /256
- .byte bne.s0 /256
- .byte bra.l /256
- .byte bra.sm1 /256
- .byte bra.sm2 /256
- .byte bra.s0 /256
- .byte bra.s1 /256
- .byte cal.1 /256
- .byte cal.2 /256
- .byte cal.3 /256
- .byte cal.4 /256
- .byte cal.5 /256
- .byte cal.6 /256
- .byte cal.7 /256
- .byte cal.8 /256
- .byte cal.9 /256
- .byte cal.10 /256
- .byte cal.11 /256
- .byte cal.12 /256
- .byte cal.13 /256
- .byte cal.14 /256
- .byte cal.15 /256
- .byte cal.16 /256
- .byte cal.17 /256
- .byte cal.18 /256
- .byte cal.19 /256
- .byte cal.20 /256
- .byte cal.21 /256
- .byte cal.22 /256
- .byte cal.23 /256
- .byte cal.24 /256
- .byte cal.25 /256
- .byte cal.26 /256
- .byte cal.27 /256
- .byte cal.28 /256
- .byte cal.s0 /256
- .byte cff.z /256
- .byte cif.z /256
- .byte cii.z /256
- .byte cmf.s0 /256
- .byte cmi.2 /256
- .byte cmi.4 /256
- .byte cmp.z /256
- .byte cms.s0 /256
- .byte csa.2 /256
- .byte csb.2 /256
- .byte dec.z /256
- .byte dee.w0 /256
- .byte del.wm1 /256
- .byte dup.2 /256
- .byte dvf.s0 /256
- .byte dvi.2 /256
- .byte fil.l /256
- .byte inc.z /256
- .byte ine.l /256
- .byte ine.w0 /256
- .byte inl.m2 /256
- .byte inl.m4 /256
- .byte inl.m6 /256
- .byte inl.wm1 /256
- .byte inn.s0 /256
- .byte ior.2 /256
- .byte ior.s0 /256
- .byte lae.l /256
- .byte lae.w0 /256
- .byte lae.w1 /256
- .byte lae.w2 /256
- .byte lae.w3 /256
- .byte lae.w4 /256
- .byte lae.w5 /256
- .byte lae.w6 /256
- .byte lal.p /256
- .byte lal.n /256
- .byte lal.0 /256
- .byte lal.m1 /256
- .byte lal.w0 /256
- .byte lal.wm1 /256
- .byte lal.wm2 /256
- .byte lar.2 /256
- .byte ldc.0 /256
- .byte lde.l /256
- .byte lde.w0 /256
- .byte ldl.0 /256
- .byte ldl.wm1 /256
- .byte lfr.2 /256
- .byte lfr.4 /256
- .byte lfr.s0 /256
- .byte lil.wm1 /256
- .byte lil.w0 /256
- .byte lil.0 /256
- .byte lil.2 /256
- .byte lin.l /256
- .byte lin.s0 /256
- .byte lni.z /256
- .byte loc.l /256
- .byte loc.m1 /256
- .byte loc.s0 /256
- .byte loc.sm1 /256
- .byte loe.l /256
- .byte loe.w0 /256
- .byte loe.w1 /256
- .byte loe.w2 /256
- .byte loe.w3 /256
- .byte loe.w4 /256
- .byte lof.l /256
- .byte lof.2 /256
- .byte lof.4 /256
- .byte lof.6 /256
- .byte lof.8 /256
- .byte lof.s0 /256
- .byte loi.l /256
- .byte loi.1 /256
- .byte loi.2 /256
- .byte loi.4 /256
- .byte loi.6 /256
- .byte loi.8 /256
- .byte loi.s0 /256
- .byte lol.p /256
- .byte lol.n /256
- .byte lol.0 /256
- .byte lol.2 /256
- .byte lol.4 /256
- .byte lol.6 /256
- .byte lol.m2 /256
- .byte lol.m4 /256
- .byte lol.m6 /256
- .byte lol.m8 /256
- .byte lol.m10 /256
- .byte lol.m12 /256
- .byte lol.m14 /256
- .byte lol.m16 /256
- .byte lol.w0 /256
- .byte lol.wm1 /256
- .byte lxa.1 /256
- .byte lxl.1 /256
- .byte lxl.2 /256
- .byte mlf.s0 /256
- .byte mli.2 /256
- .byte mli.4 /256
- .byte rck.2 /256
- .byte ret.0 /256
- .byte ret.2 /256
- .byte ret.s0 /256
- .byte rmi.2 /256
- .byte sar.2 /256
- .byte sbf.s0 /256
- .byte sbi.2 /256
- .byte sbi.4 /256
- .byte sdl.wm1 /256
- .byte set.s0 /256
- .byte sil.wm1 /256
- .byte sil.w0 /256
- .byte sli.2 /256
- .byte ste.l /256
- .byte ste.w0 /256
- .byte ste.w1 /256
- .byte ste.w2 /256
- .byte stf.l /256
- .byte stf.2 /256
- .byte stf.4 /256
- .byte stf.s0 /256
- .byte sti.1 /256
- .byte sti.2 /256
- .byte sti.4 /256
- .byte sti.6 /256
- .byte sti.8 /256
- .byte sti.s0 /256
- .byte stl.p /256
- .byte stl.n /256
- .byte stl.p0 /256
- .byte stl.p2 /256
- .byte stl.m2 /256
- .byte stl.m4 /256
- .byte stl.m6 /256
- .byte stl.m8 /256
- .byte stl.m10 /256
- .byte stl.wm1 /256
- .byte teq.z /256
- .byte tgt.z /256
- .byte tlt.z /256
- .byte tne.z /256
- .byte zeq.l /256
- .byte zeq.s0 /256
- .byte zeq.s1 /256
- .byte zer.s0 /256
- .byte zge.s0 /256
- .byte zgt.s0 /256
- .byte zle.s0 /256
- .byte zlt.s0 /256
- .byte zne.s0 /256
- .byte zne.sm1 /256
- .byte zre.l /256
- .byte zre.w0 /256
- .byte zrl.m2 /256
- .byte zrl.m4 /256
- .byte zrl.wm1 /256
- .byte zrl.n /256
- .byte loop1 /256
- .byte loop2 /256
-
- .errnz .-dispat-256
-
- .byte loc.0 %256
- .byte loc.1 %256
- .byte loc.2 %256
- .byte loc.3 %256
- .byte loc.4 %256
- .byte loc.5 %256
- .byte loc.6 %256
- .byte loc.7 %256
- .byte loc.8 %256
- .byte loc.9 %256
- .byte loc.10 %256
- .byte loc.11 %256
- .byte loc.12 %256
- .byte loc.13 %256
- .byte loc.14 %256
- .byte loc.15 %256
- .byte loc.16 %256
- .byte loc.17 %256
- .byte loc.18 %256
- .byte loc.19 %256
- .byte loc.20 %256
- .byte loc.21 %256
- .byte loc.22 %256
- .byte loc.23 %256
- .byte loc.24 %256
- .byte loc.25 %256
- .byte loc.26 %256
- .byte loc.27 %256
- .byte loc.28 %256
- .byte loc.29 %256
- .byte loc.30 %256
- .byte loc.31 %256
- .byte loc.32 %256
- .byte loc.33 %256
- .byte aar.2 %256
- .byte adf.s0 %256
- .byte adi.2 %256
- .byte adi.4 %256
- .byte adp.l %256
- .byte adp.1 %256
- .byte adp.2 %256
- .byte adp.s0 %256
- .byte adp.sm1 %256
- .byte ads.2 %256
- .byte and.2 %256
- .byte asp.2 %256
- .byte asp.4 %256
- .byte asp.6 %256
- .byte asp.8 %256
- .byte asp.10 %256
- .byte asp.w0 %256
- .byte beq.l %256
- .byte beq.s0 %256
- .byte bge.s0 %256
- .byte bgt.s0 %256
- .byte ble.s0 %256
- .byte blm.s0 %256
- .byte blt.s0 %256
- .byte bne.s0 %256
- .byte bra.l %256
- .byte bra.sm1 %256
- .byte bra.sm2 %256
- .byte bra.s0 %256
- .byte bra.s1 %256
- .byte cal.1 %256
- .byte cal.2 %256
- .byte cal.3 %256
- .byte cal.4 %256
- .byte cal.5 %256
- .byte cal.6 %256
- .byte cal.7 %256
- .byte cal.8 %256
- .byte cal.9 %256
- .byte cal.10 %256
- .byte cal.11 %256
- .byte cal.12 %256
- .byte cal.13 %256
- .byte cal.14 %256
- .byte cal.15 %256
- .byte cal.16 %256
- .byte cal.17 %256
- .byte cal.18 %256
- .byte cal.19 %256
- .byte cal.20 %256
- .byte cal.21 %256
- .byte cal.22 %256
- .byte cal.23 %256
- .byte cal.24 %256
- .byte cal.25 %256
- .byte cal.26 %256
- .byte cal.27 %256
- .byte cal.28 %256
- .byte cal.s0 %256
- .byte cff.z %256
- .byte cif.z %256
- .byte cii.z %256
- .byte cmf.s0 %256
- .byte cmi.2 %256
- .byte cmi.4 %256
- .byte cmp.z %256
- .byte cms.s0 %256
- .byte csa.2 %256
- .byte csb.2 %256
- .byte dec.z %256
- .byte dee.w0 %256
- .byte del.wm1 %256
- .byte dup.2 %256
- .byte dvf.s0 %256
- .byte dvi.2 %256
- .byte fil.l %256
- .byte inc.z %256
- .byte ine.l %256
- .byte ine.w0 %256
- .byte inl.m2 %256
- .byte inl.m4 %256
- .byte inl.m6 %256
- .byte inl.wm1 %256
- .byte inn.s0 %256
- .byte ior.2 %256
- .byte ior.s0 %256
- .byte lae.l %256
- .byte lae.w0 %256
- .byte lae.w1 %256
- .byte lae.w2 %256
- .byte lae.w3 %256
- .byte lae.w4 %256
- .byte lae.w5 %256
- .byte lae.w6 %256
- .byte lal.p %256
- .byte lal.n %256
- .byte lal.0 %256
- .byte lal.m1 %256
- .byte lal.w0 %256
- .byte lal.wm1 %256
- .byte lal.wm2 %256
- .byte lar.2 %256
- .byte ldc.0 %256
- .byte lde.l %256
- .byte lde.w0 %256
- .byte ldl.0 %256
- .byte ldl.wm1 %256
- .byte lfr.2 %256
- .byte lfr.4 %256
- .byte lfr.s0 %256
- .byte lil.wm1 %256
- .byte lil.w0 %256
- .byte lil.0 %256
- .byte lil.2 %256
- .byte lin.l %256
- .byte lin.s0 %256
- .byte lni.z %256
- .byte loc.l %256
- .byte loc.m1 %256
- .byte loc.s0 %256
- .byte loc.sm1 %256
- .byte loe.l %256
- .byte loe.w0 %256
- .byte loe.w1 %256
- .byte loe.w2 %256
- .byte loe.w3 %256
- .byte loe.w4 %256
- .byte lof.l %256
- .byte lof.2 %256
- .byte lof.4 %256
- .byte lof.6 %256
- .byte lof.8 %256
- .byte lof.s0 %256
- .byte loi.l %256
- .byte loi.1 %256
- .byte loi.2 %256
- .byte loi.4 %256
- .byte loi.6 %256
- .byte loi.8 %256
- .byte loi.s0 %256
- .byte lol.p %256
- .byte lol.n %256
- .byte lol.0 %256
- .byte lol.2 %256
- .byte lol.4 %256
- .byte lol.6 %256
- .byte lol.m2 %256
- .byte lol.m4 %256
- .byte lol.m6 %256
- .byte lol.m8 %256
- .byte lol.m10 %256
- .byte lol.m12 %256
- .byte lol.m14 %256
- .byte lol.m16 %256
- .byte lol.w0 %256
- .byte lol.wm1 %256
- .byte lxa.1 %256
- .byte lxl.1 %256
- .byte lxl.2 %256
- .byte mlf.s0 %256
- .byte mli.2 %256
- .byte mli.4 %256
- .byte rck.2 %256
- .byte ret.0 %256
- .byte ret.2 %256
- .byte ret.s0 %256
- .byte rmi.2 %256
- .byte sar.2 %256
- .byte sbf.s0 %256
- .byte sbi.2 %256
- .byte sbi.4 %256
- .byte sdl.wm1 %256
- .byte set.s0 %256
- .byte sil.wm1 %256
- .byte sil.w0 %256
- .byte sli.2 %256
- .byte ste.l %256
- .byte ste.w0 %256
- .byte ste.w1 %256
- .byte ste.w2 %256
- .byte stf.l %256
- .byte stf.2 %256
- .byte stf.4 %256
- .byte stf.s0 %256
- .byte sti.1 %256
- .byte sti.2 %256
- .byte sti.4 %256
- .byte sti.6 %256
- .byte sti.8 %256
- .byte sti.s0 %256
- .byte stl.p %256
- .byte stl.n %256
- .byte stl.p0 %256
- .byte stl.p2 %256
- .byte stl.m2 %256
- .byte stl.m4 %256
- .byte stl.m6 %256
- .byte stl.m8 %256
- .byte stl.m10 %256
- .byte stl.wm1 %256
- .byte teq.z %256
- .byte tgt.z %256
- .byte tlt.z %256
- .byte tne.z %256
- .byte zeq.l %256
- .byte zeq.s0 %256
- .byte zeq.s1 %256
- .byte zer.s0 %256
- .byte zge.s0 %256
- .byte zgt.s0 %256
- .byte zle.s0 %256
- .byte zlt.s0 %256
- .byte zne.s0 %256
- .byte zne.sm1 %256
- .byte zre.l %256
- .byte zre.w0 %256
- .byte zrl.m2 %256
- .byte zrl.m4 %256
- .byte zrl.wm1 %256
- .byte zrl.n %256
- .byte loop1 %256
- .byte loop2 %256
-
- .errnz .-dispat-512
+.data1 0 ! fourth byte
+dispat = . - 4 ! base of dispatch table
+! .data2 loc.0
+! .data2 loc.1
+ .data2 loc.2
+ .data2 loc.3
+ .data2 loc.4
+ .data2 loc.5
+ .data2 loc.6
+ .data2 loc.7
+ .data2 loc.8
+ .data2 loc.9
+ .data2 loc.10
+ .data2 loc.11
+ .data2 loc.12
+ .data2 loc.13
+ .data2 loc.14
+ .data2 loc.15
+ .data2 loc.16
+ .data2 loc.17
+ .data2 loc.18
+ .data2 loc.19
+ .data2 loc.20
+ .data2 loc.21
+ .data2 loc.22
+ .data2 loc.23
+ .data2 loc.24
+ .data2 loc.25
+ .data2 loc.26
+ .data2 loc.27
+ .data2 loc.28
+ .data2 loc.29
+ .data2 loc.30
+ .data2 loc.31
+ .data2 loc.32
+ .data2 loc.33
+ .data2 aar.2
+ .data2 adf.s0
+ .data2 adi.2
+ .data2 adi.4
+ .data2 adp.l
+ .data2 adp.1
+ .data2 adp.2
+ .data2 adp.s0
+ .data2 adp.sm1
+ .data2 ads.2
+ .data2 and.2
+ .data2 asp.2
+ .data2 asp.4
+ .data2 asp.6
+ .data2 asp.8
+ .data2 asp.10
+ .data2 asp.w0
+ .data2 beq.l
+ .data2 beq.s0
+ .data2 bge.s0
+ .data2 bgt.s0
+ .data2 ble.s0
+ .data2 blm.s0
+ .data2 blt.s0
+ .data2 bne.s0
+ .data2 bra.l
+ .data2 bra.sm1
+ .data2 bra.sm2
+ .data2 bra.s0
+ .data2 bra.s1
+ .data2 cal.1
+ .data2 cal.2
+ .data2 cal.3
+ .data2 cal.4
+ .data2 cal.5
+ .data2 cal.6
+ .data2 cal.7
+ .data2 cal.8
+ .data2 cal.9
+ .data2 cal.10
+ .data2 cal.11
+ .data2 cal.12
+ .data2 cal.13
+ .data2 cal.14
+ .data2 cal.15
+ .data2 cal.16
+ .data2 cal.17
+ .data2 cal.18
+ .data2 cal.19
+ .data2 cal.20
+ .data2 cal.21
+ .data2 cal.22
+ .data2 cal.23
+ .data2 cal.24
+ .data2 cal.25
+ .data2 cal.26
+ .data2 cal.27
+ .data2 cal.28
+ .data2 cal.s0
+ .data2 cff.z
+ .data2 cif.z
+ .data2 cii.z
+ .data2 cmf.s0
+ .data2 cmi.2
+ .data2 cmi.4
+ .data2 cmp.z
+ .data2 cms.s0
+ .data2 csa.2
+ .data2 csb.2
+ .data2 dec.z
+ .data2 dee.w0
+ .data2 del.wm1
+ .data2 dup.2
+ .data2 dvf.s0
+ .data2 dvi.2
+ .data2 fil.l
+ .data2 inc.z
+ .data2 ine.l
+ .data2 ine.w0
+ .data2 inl.m2
+ .data2 inl.m4
+ .data2 inl.m6
+ .data2 inl.wm1
+ .data2 inn.s0
+ .data2 ior.2
+ .data2 ior.s0
+ .data2 lae.l
+ .data2 lae.w0
+ .data2 lae.w1
+ .data2 lae.w2
+ .data2 lae.w3
+ .data2 lae.w4
+ .data2 lae.w5
+ .data2 lae.w6
+ .data2 lal.p
+ .data2 lal.n
+ .data2 lal.0
+ .data2 lal.m1
+ .data2 lal.w0
+ .data2 lal.wm1
+ .data2 lal.wm2
+ .data2 lar.2
+ .data2 ldc.0
+ .data2 lde.l
+ .data2 lde.w0
+ .data2 ldl.0
+ .data2 ldl.wm1
+ .data2 lfr.2
+ .data2 lfr.4
+ .data2 lfr.s0
+ .data2 lil.wm1
+ .data2 lil.w0
+ .data2 lil.0
+ .data2 lil.2
+ .data2 lin.l
+ .data2 lin.s0
+ .data2 lni.z
+ .data2 loc.l
+ .data2 loc.m1
+ .data2 loc.s0
+ .data2 loc.sm1
+ .data2 loe.l
+ .data2 loe.w0
+ .data2 loe.w1
+ .data2 loe.w2
+ .data2 loe.w3
+ .data2 loe.w4
+ .data2 lof.l
+ .data2 lof.2
+ .data2 lof.4
+ .data2 lof.6
+ .data2 lof.8
+ .data2 lof.s0
+ .data2 loi.l
+ .data2 loi.1
+ .data2 loi.2
+ .data2 loi.4
+ .data2 loi.6
+ .data2 loi.8
+ .data2 loi.s0
+ .data2 lol.p
+ .data2 lol.n
+ .data2 lol.0
+ .data2 lol.2
+ .data2 lol.4
+ .data2 lol.6
+ .data2 lol.m2
+ .data2 lol.m4
+ .data2 lol.m6
+ .data2 lol.m8
+ .data2 lol.m10
+ .data2 lol.m12
+ .data2 lol.m14
+ .data2 lol.m16
+ .data2 lol.w0
+ .data2 lol.wm1
+ .data2 lxa.1
+ .data2 lxl.1
+ .data2 lxl.2
+ .data2 mlf.s0
+ .data2 mli.2
+ .data2 mli.4
+ .data2 rck.2
+ .data2 ret.0
+ .data2 ret.2
+ .data2 ret.s0
+ .data2 rmi.2
+ .data2 sar.2
+ .data2 sbf.s0
+ .data2 sbi.2
+ .data2 sbi.4
+ .data2 sdl.wm1
+ .data2 set.s0
+ .data2 sil.wm1
+ .data2 sil.w0
+ .data2 sli.2
+ .data2 ste.l
+ .data2 ste.w0
+ .data2 ste.w1
+ .data2 ste.w2
+ .data2 stf.l
+ .data2 stf.2
+ .data2 stf.4
+ .data2 stf.s0
+ .data2 sti.1
+ .data2 sti.2
+ .data2 sti.4
+ .data2 sti.6
+ .data2 sti.8
+ .data2 sti.s0
+ .data2 stl.p
+ .data2 stl.n
+ .data2 stl.p0
+ .data2 stl.p2
+ .data2 stl.m2
+ .data2 stl.m4
+ .data2 stl.m6
+ .data2 stl.m8
+ .data2 stl.m10
+ .data2 stl.wm1
+ .data2 teq.z
+ .data2 tgt.z
+ .data2 tlt.z
+ .data2 tne.z
+ .data2 zeq.l
+ .data2 zeq.s0
+ .data2 zeq.s1
+ .data2 zer.s0
+ .data2 zge.s0
+ .data2 zgt.s0
+ .data2 zle.s0
+ .data2 zlt.s0
+ .data2 zne.s0
+ .data2 zne.sm1
+ .data2 zre.l
+ .data2 zre.w0
+ .data2 zrl.m2
+ .data2 zrl.m4
+ .data2 zrl.wm1
+ .data2 zrl.n
+ .data2 loop1
+ .data2 loop2
!----------------- END OF MAIN DISPATCH -------------------------------
+xxx:
+ .data2 loc.0
+ .data2 loc.1
init:
ld sp,(bdos+1) ! address of fbase
- ld hl,dispat
- ld (hl),loc.0/256
- inc hl
- ld (hl),loc.1/256
- inc hl
- ld (hl),loc.2/256
+ ld hl,xxx
+ ld de,dispat
+ ld bc,4
+ ldir
call uxinit
warmstart:
ld sp,(bdos+1) ! address of fbase
jr nz,1b
! now program text has been read,so start read-
ld iy,0 ! ing data descriptors, (nextp) (was hl) is
- ld ix,eb+eb%2 ! pointer into DMA,ix is pointer into global
+ ld ix,eb ! pointer into DMA,ix is pointer into global
! data area,iy is #bytes pushed in last instr (used for repeat)
rddata: ld hl,(ndata)
ld a,h
jr z,3f
ld hl,(pb)
jr 4f
-3: ld hl,eb+eb%2
+3: ld hl,eb
jr 4f
2: ld hl,0
4: ld (ntext),hl ! ntext is used here to hold base address of
!------------------------- Main loop of the interpreter ---------------
phl: push hl
-loop:
- .errnz dispat%256
- ld l,(ix) ! l = opcode byte
- inc ix ! advance program counter
- ld h,dispat/256 ! hl=address of high byte of jumpaddress
- ld d,(hl) ! d=high byte of jump address
- inc h ! hl=address of low byte of jumpaddress
- ld e,(hl) ! de=jumpaddress
- xor a ! clear a and carry
- ld h,a ! and clear h
- ex de,hl ! d:=0; hl:=jumpaddress
+loop: ld e,(ix) ! e = opcode byte
+ inc ix ! advance EM program counter to next byte
+ ld hl,dispat ! hl = address of dispatching table
+ xor a
+ ld d,a
+ add hl,de ! compute address of routine for this opcode
+ add hl,de ! hl = address of routine to dispatch to
+ ld d,(hl) ! e = low byte of routine address
+ inc hl ! hl now points to 2nd byte of routine address
+ ld h,(hl) ! h = high byte of routine address
+ ld l,d ! hl = address of routine
+ ld d,a
jp (hl) ! go execute the routine
loop1: ld e,(ix) ! e = opcode byte
loe.w1: inc d
loe.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr ipsh
lae.w1: inc d
lae.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr phl
inc ix
ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
jr phl
inc hl
inc hl
inc hl
- .errnz .-2b-zone
+ .assert [ .-2b-zone] == 0
ld e,(hl)
inc hl
ld h,(hl)
lpb.z:
pop hl
- .errnz zone/256
+ .assert [ zone/256] == 0
ld e,zone
add hl,de
jr phl
lde.w1: inc d
lde.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr dipsh
ste.w1: inc d
ste.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr ipop
inc ix
ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
2: add hl,de
1: pop de
ld (hl),e
pop de
9:
call chk24
- .word adi.2,adi.4
+ .data2 adi.2,adi.4
adi.l: adu.l:
ld d,(ix) ! I guess a routine chk24.l could do this job
inc ix
pop de
9:
call chk24
- .word sbi.2,sbi.4
+ .data2 sbi.2,sbi.4
sbi.l: sbu.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word ngi.2,ngi.4
+ .data2 ngi.2,ngi.4
ngi.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word mli.2,mli.4
+ .data2 mli.2,mli.4
mli.l: mlu.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word dvi.2,dvi.4
+ .data2 dvi.2,dvi.4
dvi.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word dvu.2,dvu.4
+ .data2 dvu.2,dvu.4
dvu.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word rmi.2,rmi.4
+ .data2 rmi.2,rmi.4
rmi.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word rmu.2,rmu.4
+ .data2 rmu.2,rmu.4
rmu.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word sli.2,sli.4
+ .data2 sli.2,sli.4
slu.l:
sli.l:
ld d,(ix)
pop de
9:
call chk24
- .word sri.2,sri.4
+ .data2 sri.2,sri.4
sri.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word sru.2,sru.4
+ .data2 sru.2,sru.4
sru.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word rol.2,rol.4
+ .data2 rol.2,rol.4
rol.l:
ld d,(ix)
inc ix
pop de
9:
call chk24
- .word ror.2,ror.4
+ .data2 ror.2,ror.4
ror.l:
ld d,(ix)
inc ix
ine.w1: inc d
ine.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr 1b
dee.w1: inc d
dee.w0: ld e,(ix)
inc ix
- ld hl,eb+eb%2
+ ld hl,eb
add hl,de
add hl,de
jr 1b
inc ix
cal: push ix ! entry point for main program of interpreter
push bc
- ld hl,(eb+eb%2)
+ ld hl,(eb)
push hl
- ld hl,(eb+eb%2+4)
+ ld hl,(ebp4)
push hl
! temporary tracing facility
! NOP it if you don't want it
push de
- ld de,(eb+eb%2+4)
- ld hl,(eb+eb%2)
+ ld de,(ebp4)
+ ld hl,(eb)
call prline
pop de
! end of temporary tracing
ld l,c
ld sp,hl
pop hl
- ld (eb+eb%2+4),hl
+ ld (ebp4),hl
pop hl
- ld (eb+eb%2),hl
+ ld (eb),hl
pop bc ! old LB
pop ix ! reta
push ix ! check to see if reta = boot (= 0)
ld c,printstring
ld de,2f
call bdos
- ld de,(eb+eb%2+4)
- ld hl,(eb+eb%2)
+ ld de,(ebp4)
+ ld hl,(eb)
call prline
0:
pop iy ! LB
nop.z: push bc
ld iy,1f+12
- ld hl,(eb+eb%2)
+ ld hl,(eb)
call octnr
ld iy,1f+20
ld hl,0
inc ix
lin.s0: ld e,(ix)
inc ix
- ld (eb+eb%2),de
+ ld (eb),de
jr loop
! FIL
fil.z: pop hl
1:
- ld (eb+eb%2+4),hl
+ ld (ebp4),hl
jr loop
fil.l: ld h,(ix)
inc ix
ld l,(ix)
inc ix
- ld de,eb+eb%2
+ ld de,eb
add hl,de
jr 1b
! LNI
-lni.z: ld hl,(eb+eb%2)
+lni.z: ld hl,(eb)
inc hl
- ld (eb+eb%2),hl
+ ld (eb),hl
jr loop
cfi.z:
pop de
call chk24
- .word 1f,0f
+ .data2 1f,0f
1: ld iy,1f
jr pop4
1: pop hl
1:
pop de
call chk24
- .word 1f,0f
+ .data2 1f,0f
1: pop hl
ld (fpac),hl
push bc
zcount=41
zsave=42
- .errnz filefcb
+ .assert [ filefcb] == 0
0: .space maxfiles*filesize
filearea = 0b+128
sibuf:
- .word 0
+ .data2 0
.space 82
siptr: .space 2
saveargs:
.space 128
argv: .space 40 ! not more than 20 args
argc: .space 2
-ttymode:.byte 9,9,8,21;.short 06310+RAW*040 ! raw = 040
+ttymode:.data1 9,9,8,21;.data2 06310+RAW*040 ! raw = 040
uxinit:
xor a
jr 4b
9: push ix
pop hl
- ld de,-argv
- add hl,de
+ ld de,argv
+ or a
+ sbc hl,de
srl h;rr l
ld (argc),hl
ld (ix+0),0
jp (hl)
systab:
- .word ux_indir
- .word ux_exit
- .word ux_fork
- .word ux_read
- .word ux_write
- .word ux_open
- .word ux_close
- .word ux_wait
- .word ux_creat
- .word ux_link
- .word ux_unlink
- .word ux_exec
- .word ux_chdir
- .word ux_time
- .word ux_mknod
- .word ux_chmod
- .word ux_chown
- .word ux_break
- .word ux_stat
- .word ux_seek
- .word ux_getpid
- .word ux_mount
- .word ux_umount
- .word ux_setuid
- .word ux_getuid
- .word ux_stime
- .word ux_ptrace
- .word ux_alarm
- .word ux_fstat
- .word ux_pause
- .word ux_utime
- .word ux_stty
- .word ux_gtty
- .word ux_access
- .word ux_nice
- .word ux_ftime
- .word ux_sync
- .word ux_kill
- .word unimpld
- .word unimpld
- .word unimpld
- .word ux_dup
- .word ux_pipe
- .word ux_times
- .word ux_prof
- .word ux_unused
- .word ux_setgid
- .word ux_getgid
- .word ux_sig
- .word unimpld
- .word unimpld
- .word unimpld
- .word unimpld
- .word unimpld
- .word ux_ioctl
- .word unimpld
- .word unimpld
- .word unimpld
- .word unimpld
- .word ux_exece
- .word ux_umask
- .word ux_chroot
- .word unimpld
- .word unimpld
+ .data2 ux_indir
+ .data2 ux_exit
+ .data2 ux_fork
+ .data2 ux_read
+ .data2 ux_write
+ .data2 ux_open
+ .data2 ux_close
+ .data2 ux_wait
+ .data2 ux_creat
+ .data2 ux_link
+ .data2 ux_unlink
+ .data2 ux_exec
+ .data2 ux_chdir
+ .data2 ux_time
+ .data2 ux_mknod
+ .data2 ux_chmod
+ .data2 ux_chown
+ .data2 ux_break
+ .data2 ux_stat
+ .data2 ux_seek
+ .data2 ux_getpid
+ .data2 ux_mount
+ .data2 ux_umount
+ .data2 ux_setuid
+ .data2 ux_getuid
+ .data2 ux_stime
+ .data2 ux_ptrace
+ .data2 ux_alarm
+ .data2 ux_fstat
+ .data2 ux_pause
+ .data2 ux_utime
+ .data2 ux_stty
+ .data2 ux_gtty
+ .data2 ux_access
+ .data2 ux_nice
+ .data2 ux_ftime
+ .data2 ux_sync
+ .data2 ux_kill
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 ux_dup
+ .data2 ux_pipe
+ .data2 ux_times
+ .data2 ux_prof
+ .data2 ux_unused
+ .data2 ux_setgid
+ .data2 ux_getgid
+ .data2 ux_sig
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 ux_ioctl
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 unimpld
+ .data2 ux_exece
+ .data2 ux_umask
+ .data2 ux_chroot
+ .data2 unimpld
+ .data2 unimpld
emptyfile:
! searches for a free filestructure
dispat1: ! base for escaped opcodes
-.word aar.l, aar.z, adf.l, adf.z, adi.l, adi.z, ads.l, ads.z
-.word adu.l, adu.z, and.l, and.z, asp.l, ass.l, ass.z, bge.l
-.word bgt.l, ble.l, blm.l, bls.l, bls.z, blt.l, bne.l, cai.z
-.word cal.l, cfi.z, cfu.z, ciu.z, cmf.l, cmf.z, cmi.l, cmi.z
-.word cms.l, cms.z, cmu.l, cmu.z, com.l, com.z, csa.l, csa.z
-.word csb.l, csb.z, cuf.z, cui.z, cuu.z, dee.l, del.p, del.n
-.word dup.l, dus.l, dus.z, dvf.l, dvf.z, dvi.l, dvi.z, dvu.l
-.word dvu.z, fef.l, fef.z, fif.l, fif.z, inl.p, inl.n, inn.l
-.word inn.z, ior.l, ior.z, lar.l, lar.z, ldc.l, ldf.l, ldl.p
-.word ldl.n, lfr.l, lil.p, lil.n, lim.z, los.l, los.z, lor.s0
-.word lpi.l, lxa.l, lxl.l, mlf.l, mlf.z, mli.l, mli.z, mlu.l
-.word mlu.z, mon.z, ngf.l, ngf.z, ngi.l, ngi.z, nop.z, rck.l
-.word rck.z, ret.l, rmi.l, rmi.z, rmu.l, rmu.z, rol.l, rol.z
-.word ror.l, ror.z, rtt.z, sar.l, sar.z, sbf.l, sbf.z, sbi.l
-.word sbi.z, sbs.l, sbs.z, sbu.l, sbu.z, sde.l, sdf.l, sdl.p
-.word sdl.n, set.l, set.z, sig.z, sil.p, sil.n, sim.z, sli.l
-.word sli.z, slu.l, slu.z, sri.l, sri.z, sru.l, sru.z, sti.l
-.word sts.l, sts.z, str.s0, tge.z, tle.z, trp.z, xor.l, xor.z
-.word zer.l, zer.z, zge.l, zgt.l, zle.l, zlt.l, zne.l, zrf.l
-.word zrf.z, zrl.p, dch.z, exg.s0, exg.l, exg.z, lpb.z
+.data2 aar.l, aar.z, adf.l, adf.z, adi.l, adi.z, ads.l, ads.z
+.data2 adu.l, adu.z, and.l, and.z, asp.l, ass.l, ass.z, bge.l
+.data2 bgt.l, ble.l, blm.l, bls.l, bls.z, blt.l, bne.l, cai.z
+.data2 cal.l, cfi.z, cfu.z, ciu.z, cmf.l, cmf.z, cmi.l, cmi.z
+.data2 cms.l, cms.z, cmu.l, cmu.z, com.l, com.z, csa.l, csa.z
+.data2 csb.l, csb.z, cuf.z, cui.z, cuu.z, dee.l, del.p, del.n
+.data2 dup.l, dus.l, dus.z, dvf.l, dvf.z, dvi.l, dvi.z, dvu.l
+.data2 dvu.z, fef.l, fef.z, fif.l, fif.z, inl.p, inl.n, inn.l
+.data2 inn.z, ior.l, ior.z, lar.l, lar.z, ldc.l, ldf.l, ldl.p
+.data2 ldl.n, lfr.l, lil.p, lil.n, lim.z, los.l, los.z, lor.s0
+.data2 lpi.l, lxa.l, lxl.l, mlf.l, mlf.z, mli.l, mli.z, mlu.l
+.data2 mlu.z, mon.z, ngf.l, ngf.z, ngi.l, ngi.z, nop.z, rck.l
+.data2 rck.z, ret.l, rmi.l, rmi.z, rmu.l, rmu.z, rol.l, rol.z
+.data2 ror.l, ror.z, rtt.z, sar.l, sar.z, sbf.l, sbf.z, sbi.l
+.data2 sbi.z, sbs.l, sbs.z, sbu.l, sbu.z, sde.l, sdf.l, sdl.p
+.data2 sdl.n, set.l, set.z, sig.z, sil.p, sil.n, sim.z, sli.l
+.data2 sli.z, slu.l, slu.z, sri.l, sri.z, sru.l, sru.z, sti.l
+.data2 sts.l, sts.z, str.s0, tge.z, tle.z, trp.z, xor.l, xor.z
+.data2 zer.l, zer.z, zge.l, zgt.l, zle.l, zlt.l, zne.l, zrf.l
+.data2 zrf.z, zrl.p, dch.z, exg.s0, exg.l, exg.z, lpb.z
dispat2: ! base for 4 byte offsets
-.word ldc.f
+.data2 ldc.f
-ignmask: .word 0 ! ignore mask (variable)
-retarea: .word 0 ! base of buffer for result values (max 8 bytes)
- .word 0
- .word 0
- .word 0
+ignmask: .data2 0 ! ignore mask (variable)
+retarea: .data2 0 ! base of buffer for result values (max 8 bytes)
+ .data2 0
+ .data2 0
+ .data2 0
trapproc:
- .word 0
+ .data2 0
-nextp: .byte 0
+nextp: .data1 0
header:
-ntext: .word 0
-ndata: .word 0
-nproc: .word 0
-entry: .word 0
-nline: .word 0
-
-hp: .word 0
-pb: .word 0
-pd: .word 0
+ntext: .data2 0
+ndata: .data2 0
+nproc: .data2 0
+entry: .data2 0
+nline: .data2 0
+
+hp: .data2 0
+pb: .data2 0
+pd: .data2 0
public / ack.git / commitdiff