X-Git-Url: http://cloudbase.mooo.com/gitweb/ddt180.git/blobdiff_plain/4210c8a16472bf2891614bdde109dd5d7edb713e..1190f4f040cac38f70ef6a25352b3154929d9a78:/ddt180.z80

diff --git a/ddt180.z80 b/ddt180.z80
index 45e63d4..5c13492 100644
--- a/ddt180.z80
+++ b/ddt180.z80
@@ -63,11 +63,6 @@ CONBUF_SIZE	equ	80	;Size of console input buffer
 EXPR_BUF_SIZE	equ	128	;expressen buffer for conditional breakpoints
 BP_CNT		equ	12	;Number of breakpoints
 BP_SIZE		equ	8	;Size of a breakpoint record
-YREG_CNT	equ	10	;Number of Y registers (0..9)
-
-SYMCASE_SENS	equ	0	;Symbols are case sensitive
-SYMCASE_CONV	equ	1	;Convert case when symbols are loaded
-SYMCASE_LOWER	equ	2	;Convert to lower case if set, else to upper case
 
 ;-------------------------------------------------------------------------------
 
@@ -80,12 +75,6 @@ di_or_ei:
 	ret
 ddtz_bdos:
 	jp	0
-screen_width:
-	db	80
-
-symattrib:
-	db	0
-
 
 current_cseg	defl	$ - current_cseg
 	.phase	current_phase + current_cseg
@@ -133,7 +122,6 @@ reg.pc:	dw	TPA
 var.$:	dw	0000h
 var.@:	dw	0
 
-error_func:dw	p_msg_error
 cmd_rpt:dw	mainloop
 
 ;-------------------------------------------------------------------------------
@@ -201,20 +189,23 @@ CMDTAB:
 	dw	cmd_O		;Output a byte to port
 	dw	ERROR		;
 	dw	cmd_Q		;Qery memory for byte string
-	dw	cmd_R		;Read binary or hex file and/or symbol file
+	dw	cmd_R		;Read binary or hex file
 	dw	cmd_S		;Substitute memory
 	dw	cmd_T		;Trace
 	dw	ERROR		;
 	dw	cmd_V		;Verify (compare) two memory areas
 	dw	cmd_W		;Write a file to disk
 	dw	cmd_X		;eXamine [and substitute] registers
-	dw	cmd_Y		;examine [and substitute] Y variables
+	dw	ERROR ;cmd_Y	;examine [and substitute] Y variables
 	dw	cmd_Z		;Zap (fill) memory with a byte string
 
+ERROR:
+p_msg_error:
+	call	pstr_inl
+	dc	'?',CR,LF
+	;fall thru
 mainloop:
 	ld sp,stack
-	ld hl,p_msg_error
-	ld (error_func),hl
 	ld hl,(reg.pc)
 	ld (var.$),hl
 	call bp_clr_temporary
@@ -242,23 +233,16 @@ mainloop:
 	inc hl
 	ld h,(hl)
 	ld l,a
-	jr exe_hl
 
-ERROR:
-	ld hl,(error_func)
 exe_hl:
 	call CALL_HL
 	jr mainloop
 
 ;-------------------------------------------------------------------------------
 
-p_msg_error:
-	call	pstr_inl
-	dc	'?'
-	;fall thru
 crlf:
 	call	pstr_inl
-	db	CR,LF+80h
+	dc	CR,LF
 	call inchar
 	ld a,0
 	ld (con_col),a
@@ -438,17 +422,6 @@ pstr_inl:
 	ex	(sp),hl
 	ret
 
-p_align_@_sym:
-	push	de
-	ld	de,(var.@)
-	ld	a,d
-	or	e
-	pop	de
-	ld	a,(symlen_cur)
-	jr	z,$+4
-	add	a,6
-	add	a,c
-	ld	c,a
 p_goto_col:
 	ld	a,(con_col)
 	cp	c
@@ -562,86 +535,6 @@ cp_hl_de:
 	sbc hl,de
 	add hl,de
 	ret
-
-sub_hl_a1:
-	dec	hl
-sub_hl_a:
-	push	bc
-	ld	c,a
-	ld	b,0
-	or	a
-	sbc	hl,bc
-	pop	bc
-	ret
-
-;-------------------------------------------------------------------------------
-
-sym_getname:
-	push	de
-	push	hl
-	ld	hl,ddtz_base+2
-sgn_l:
-	ld	d,(hl)
-	dec	hl
-	ld	e,(hl)
-	dec	hl
-	ld	a,(hl)
-	cp	0c3h
-	jr	z,sgn_e
-
-	ex	(sp),hl
-	call	cp_hl_de
-	jr	z,sgn_e
-	ex	(sp),hl
-	call	sub_hl_a1
-	jr	sgn_l
-sgn_e:
-	sub	0c3h
-	pop	hl
-	pop	de
-	ret
-
-p_symstr:
-	push	bc
-	ld	b,(hl)
-pss_l:
-	dec	hl
-	ld	a,(hl)
-	call	outchar
-	djnz	pss_l
-	dec	hl
-	pop	bc
-	ret
-
-p_symbol:
-  if 0
-	ld	a,(dash_flag)
-	or	a
-	ret	nz
-  endif
-	push	hl
-	call	sym_getname
-	call	nz,p_symstr
-	pop	hl
-	ret
-
-p_label:
-  if 0
-	ld	a,(dash_flag)
-	or	a
-	ret	nz
-  endif
-	push	hl
-	call	sym_getname
-	jr	z,pl_e
-	call	p_symstr
-	call	pstr_inl
-	dc	':'
-	call	crlf
-pl_e:
-	pop	hl
-	ret
-
 ;-------------------------------------------------------------------------------
 
 lookupch:
@@ -1112,37 +1005,18 @@ do_factor:
 	jr z,fact_factor
 	cp '^'
 	jr z,fact_reg.CPU
-	cp 'Y'
-	jr z,fact_reg.Y
 	cp '('
 	jr z,fact_mem
 	cp '['
 	jr z,expr_brckt
 	cp ''''
 	jr z,fact_factstring
-	cp '.'
-	jr z,fact_symbol
 	dec de
 	scf
 	ret
 
 ;-------------------------------------------------------------------------------
 
-fact_reg.Y:
-	call get.decdigit
-	jr c,error1
-	inc de
-get_y_val:
-	add a,a
-	ld hl,reg_Y
-	call add_hl_a
-	ld a,(hl)
-	inc hl
-	ld h,(hl)
-	ld l,a
-	and a
-	ret
-
 fact_factstring:
 	ld hl,0
 l054bh:
@@ -1227,59 +1101,6 @@ expr_brckt:
 error1:
 	jp ERROR
 
-fact_symbol:
-	push	bc
-	ld	hl,ddtz_base		;symtbl start
-	ld	a,(symattrib)
-	ld	c,07fh
-	rra
-	jr	c,fs_nxtsym
-	res	5,c
-
-fs_nxtsym:
-	ld	a,(hl)			;symlen
-	cp	0c3h
-	jr	z,error1
-	ld	b,a			;symlen
-	inc	b
-	push	hl			;symtbl ptr
-	push	de			;inpsym ptr
-fs_nxtchar:
-	ld	a,(de)
-	djnz	fs_3
-	call	test_sym_char
-	jr	z,fs_cont
-	pop	hl			;inpsym ptr (discard)
-	inc	de
-	cp	a,':'
-	jr	z,fs_cont_1
-	dec	de
-
-	pop	hl			;symtbl ptr
-	inc	hl
-	ld	a,(hl)			;symval h
-	inc	hl
-	ld	h,(hl)			;symval l
-	ld	l,a
-	or	a			;clear carry
-	pop	bc
-	ret
-
-fs_3:
-	inc	de
-	dec	hl
-	xor	(hl)
-	and	c
-	jr	z,fs_nxtchar
-fs_cont:				;start over
-	pop	de			;inpsym ptr
-fs_cont_1:
-	pop	hl			;symtbl ptr
-	ld	a,(hl)
-	add	a,3
-	call	sub_hl_a
-	jr	fs_nxtsym
-
 ;-------------------------------------------------------------------------------
 
 get.number:
@@ -1662,12 +1483,8 @@ l07cdh:
 	ld l,(ix+002h)
 	ld h,(ix+003h)
 	call out.hl.@
-	call	outbl
-	call	p_symbol
-	ld	c,9
-	call	p_align_@_sym
 	call 	pstr_inl
-	dc	':'
+	dc	'  :'
 	ld l,(ix+004h)
 	ld h,(ix+005h)
 	call out_hl
@@ -2063,53 +1880,6 @@ l0ab0h:
 ; > Y[0..9]
 ;      examine (and substitute) an Y variable
 
-cmd_Y:
-	call get.decdigit
-	jr c,l0bc3h
-	inc de
-	push af
-	call assert_eol
-	pop af
-	call sub_0bdch
-	jp l0c15h
-l0bc3h:
-	call assert_eol
-	xor a
-l0bc7h:
-	push af
-	call sub_0bdch
-	call	outbl
-	pop af
-	push af
-	call get_y_val
-	call p_symbol
-	pop af
-	inc a
-	push af
-	rra
-	push	af
-	ld	c,11
-	call	c,p_align_@_sym
-	pop	af
-	call 	nc,crlf
-	pop af
-	cp YREG_CNT
-	jr c,l0bc7h
-	ret
-
-sub_0bdch:
-	ld c,a
-	ld b,0
-	add a,'0'+080h
-	ld de,msg_Y+1
-	ld (de),a
-	dec de
-	ld hl,reg_Y
-	add hl,bc
-	add hl,bc
-	ex de,hl
-	ld c,003h
-	jp l0c33h
 
 ;-------------------------------------------------------------------------------
 ; > X
@@ -2515,18 +2285,12 @@ cmdm_up:
 ; > H
 ;      display Highest load address of last filed loaded, Maximum "High"
 ;      off all loaded files, and Top address of available memory
-; > HS
-;      display symbol list
 ; > H expression
 ;      evaluate expression and display result in hex, decimal and other formats
 ; > H expression expression
 ;      display sum und difference of expressions
 
 cmd_H:
-	call get_char_upper
-	cp 'S'
-	jr z,p_sym_list
-
 	call expr
 	jp c,p_max_high0
 	call next_arg
@@ -2556,56 +2320,11 @@ l0e5eh:
 	call out_hl_dec_neg
 	call outbl4
 	call out.bin.w
-	call outbl
+	call outbl2
 	ld a,l
 	call out.ascii
-	call	outbl2
-	call p_symbol
 	jp crlf
 
-p_sym_list:
-	inc	de
-	call	assert_eol
-	ld	a,(symlen_cur)
-	add	a,7
-	ld	b,a
-	ld	c,0
-	ld	hl,ddtz_base+2
-psym_nxtsym:
-	ld	d,(hl)
-	dec	hl
-	ld	e,(hl)
-	dec	hl
-	ld	a,(hl)
-	cp	0c3h
-	jr	z,psym_e
-
-	call	p_goto_col
-	ex	de,hl
-	call	out_hl
-	call	outbl
-	ex	de,hl
-	call	p_symstr
-
-	ld	a,c
-	add	b
-	ld	c,a
-	ld	a,(screen_width)
-	sub	b
-	cp	c
-	jr	nc,psym_nxtsym
-
-	call	crlf
-	ld	c,0
-	jr	psym_nxtsym
-
-psym_e:
-	ld	a,c
-	or	a
-	ret	z
-	jp	crlf
-
-
 ;-------------------------------------------------------------------------------
 ; > Q[J] startaddr endaddr bytes
 ;      Query memory for a byte string [Justified]
@@ -3166,50 +2885,6 @@ rdhex_done:
 	pop hl
 	jp p_max_high
 
-
-; test for valid character for symbols
-; return z if valid
-
-test_sym_char:
-	cp	'$'
-	ret	z
-	cp	'%'
-	ret	z
-	cp	'.'
-	ret	z
-	cp	'_'
-	ret	z
-	call	test_alphanum
-	ret	c		; cy == 1 --> z == 0
-	cp	a		; return z
-	ret
-
-
-; check if char is in [0..9,?,@,A..Z,a..z]
-; return cy if invalid
-; return nc if valid alfanumeric char
-
-test_alphanum:
-	cp	'z'
-	ret	z
-	ccf
-	ret	c
-	cp	'a'
-	ret	nc
-	cp	'Z'
-	ret	z
-	ccf
-	ret	c
-	cp	'?'
-	ret	nc
-test_numeral:
-	cp	'9'
-	ret	z
-	ccf
-	ret	c
-	cp	'0'
-	ret
-
 test_whitespace:
 	cp	' '
 	ret	z
@@ -3375,7 +3050,6 @@ cmdl_p_line:
 	ret
 
 p_disas_line:
-	call p_label
 	call outbl2
 	call out.hl.@
 	call z,outbl
@@ -3389,10 +3063,7 @@ p_disas_line:
 
 	ld	c,15
 	call	p_goto_col
-	call	p_offset
-	call	outbl
-	jp	p_symbol
-
+	; fall thru
 ;-------------------------------------------------------------------------------
 
 p_offset:
@@ -4822,13 +4493,6 @@ expr_bufe:
 
 ;-------------------------------------------------------------------------------
 
-msg_Y:
-	dc	'Yn'
-reg_Y:
-	rept	YREG_CNT
-	 dw	0
-	endm
-
 last_S:
 	dw	TPA
 
@@ -4866,8 +4530,6 @@ disas_argtype:
 pbl_loop_adr:
 	dw	0
 
-symlen_cur:		;max length of symbols read so far
-	db	0
 cur_fcb:
 	dw	0