WebSVN – pentevo – Diff – /rom/page5/source/math.a80

Rev 952		Rev 1186
Line 1...		Line 1...
1		1
2	;LAST UPDATE: 27.02.2021 savelij	2	; LAST UPDATE: 06.02.2025 savelij
3		3
4	MATH CALL P5_READ_BYTE	4	MATH CALL P5_READ_BYTE
5	LD A,(NEXTBYTERST8)	5	LD A,(NEXTBYTERST8)
6	ADD A,A	6	ADD A,A
7	ADD A,LOW (.MATH_FUNC)	7	ADD A,LOW (.MATH_FUNC)
Line 24...		Line 24...
24	DW .XHEX1DEC	24	DW .XHEX1DEC
25		25
26	.XHEX4DEC LD BC,(RREG_C)	26	.XHEX4DEC LD BC,(RREG_C)
27	LD DE,(RREG_E)	27	LD DE,(RREG_E)
28	CALL .HEX4DEC	28	CALL .HEX4DEC
29	.LDIRSTRTEXT LD BC,CPU6	29	.LDIRSTRTEXT LD BC,CPU2
30	AND A	30	AND A
31	SBC HL,BC	31	SBC HL,BC
32	LD DE,(RREG_L)	32	LD DE,(RREG_L)
33	LD BC,STRLEN("4294967295\0")	33	LD BC,STRLEN("4294967295\0")
34	JP LDIR_BYTES	34	JP LDIR_BYTES
Line 83...		Line 83...
83	CALL .MULTIPLY	83	CALL .MULTIPLY
84	LD (RREG_C),HL ; = BC	84	LD (RREG_C),HL ; = BC
85	LD (RREG_E),DE ; DE	85	LD (RREG_E),DE ; DE
86	RET	86	RET
87		87
88	;[деление bc=bc/de]	88	; деление BC = BC / DE
89	.DIVIDE xor a	89	.DIVIDE xor a
90	ld h,a	90	ld h,a
91	ld l,a	91	ld l,a
92	ld a,10h	92	ld a,10h
93	.loc_3E29 ccf	93	.loc_3E29 ccf
Line 100...		Line 100...
100	jr nc,.loc_3E29	100	jr nc,.loc_3E29
101	add hl,de	101	add hl,de
102	or a	102	or a
103	jr .loc_3E2A	103	jr .loc_3E2A
104		104
105	;[умножение hlde=bc*de]	105	; умножение HLDE = BC * DE
106	.MULTIPLY push bc	106	.MULTIPLY push bc
107	ld a,b	107	ld a,b
108	ld hl,0	108	ld hl,0
109	ld b,10h	109	ld b,10h
110	.MULTIPLY2 add hl,hl	110	.MULTIPLY2 add hl,hl
Line 121...		Line 121...
121	ld l,c	121	ld l,c
122	ld h,a	122	ld h,a
123	pop bc	123	pop bc
124	ret	124	ret
125		125
126	;[умножение DE'HL'DEHL=DEHL*BC]	126	; умножение DE'HL'DEHL = DEHL * BC
127	.MUL_BC_DEHL XOR A	127	.MUL_BC_DEHL XOR A
128	LD H,A	128	LD H,A
129	LD L,A	129	LD L,A
130	LD D,A	130	LD D,A
131	LD E,A	131	LD E,A
132	EXX	132	EXX
133	LD B,A	133	LD B,A
134	LD C,A	134	LD C,A
135	LD A,0X20	135	LD A,0x20
136	.MUL1 EX AF,AF'	136	.MUL1 EX AF,AF'
137	EXX	137	EXX
138	ADD HL,HL	138	ADD HL,HL
139	EX DE,HL	139	EX DE,HL
140	ADC HL,HL	140	ADC HL,HL
Line 154...		Line 154...
154	DEC A	154	DEC A
155	JR NZ,.MUL1	155	JR NZ,.MUL1
156	EXX	156	EXX
157	RET	157	RET
158		158
159	;[BCDE=BCDE/HL]	159	; BCDE = BCDE / HL
160	.LDIV_HL EX DE,HL	160	.LDIV_HL EX DE,HL
161	PUSH BC	161	PUSH BC
162	EXX	162	EXX
163	POP HL	163	POP HL
164	LD DE,0	164	LD DE,0
165	JR .LDIV1	165	JR .LDIV1
166		166
167	;[BCDE=(HL)/BCDE]	167	; BCDE = (HL) / BCDE
168	.LDIV__HL_ PUSH BC ;DE'	168	.LDIV__HL_ PUSH BC ; DE'
169	LD C,(HL)	169	LD C,(HL)
170	INC HL	170	INC HL
171	LD B,(HL) ;HL	171	LD B,(HL) ; HL
172	INC HL	172	INC HL
Line 195...		Line 195...
195	; функция состоит из двух частей:	195	; функция состоит из двух частей:
196	; 1. 32-разрядное делимое и 16-разрядный	196	; 1. 32-разрядное делимое и 16-разрядный
197	; делитель.	197	; делитель.
198	; 2. 32-раздядное делимое и 32-разрядный	198	; 2. 32-раздядное делимое и 32-разрядный
199	; делитель.	199	; делитель.
200	; hl'hl = hl'hl / de'de	200	; HL'HL = HL'HL / DE'DE
201	; de'de = hl'hl % de'de	201	; DE'DE = HL'HL % DE'DE
202	.ldiv push hl	202	.ldiv push hl
203	xor a	203	xor a
204	ld l,a	204	ld l,a
205	ld h,a	205	ld h,a
206	sub e	206	sub e
Line 211...		Line 211...
211	exx	211	exx
212	pop bc	212	pop bc
213	ld a,0	213	ld a,0
214	sbc a,e	214	sbc a,e
215	ld e,a	215	ld e,a
216	sbc a,d ; de'de=0-divisor	216	sbc a,d ; DE'DE=0-divisor
217	sub e	217	sub e
218	ld d,a	218	ld d,a
219	and e	219	and e
220	inc a ; Z=short divisor	220	inc a ; Z=short divisor
221	push hl	221	push hl
222	ld hl,0 ; hl'hl=reminder	222	ld hl,0 ; HL'HL=reminder
223	exx	223	exx
224	pop bc	224	pop bc
225	ld a,b ; a,c,bc'=divident	225	ld a,b ; A,C,BC'=divident
226	jr nz,.ldiv_long	226	jr nz,.ldiv_long
227		227
228	; divisor = -00de	228	; divisor = -00DE
229	ld b,8	229	ld b,8
230	rla	230	rla
231	.ldivs0 rl l	231	.ldivs0 rl l
232	add hl,de	232	add hl,de
233	jr c,.ldivs1	233	jr c,.ldivs1
Line 245...		Line 245...
245	sbc hl,de	245	sbc hl,de
246	.ldivs3 rla	246	.ldivs3 rla
247	djnz .ldivs2	247	djnz .ldivs2
248	jr .ldiv_long1	248	jr .ldiv_long1
249		249
250	; divisor=-de'de	250	; divisor = -DE'DE
251	.ldiv_long call .ldiv_8	251	.ldiv_long call .ldiv_8
252	ld b,c	252	ld b,c
253	ld c,a	253	ld c,a
254	ld a,b	254	ld a,b
255	call .ldiv_8	255	call .ldiv_8
Line 267...		Line 267...
267	ex af,af'	267	ex af,af'
268	ld c,a	268	ld c,a
269	ex af,af'	269	ex af,af'
270	exx	270	exx
271	call .ldiv_8	271	call .ldiv_8
272	; result=c,bc',a -> hl'hl	272	; result = C,BC',A -> HL'HL
273	; reminder=hl'hl -> de'de	273	; reminder = HL'HL -> DE'DE
274	ex de,hl	274	ex de,hl
275	ld l,a	275	ld l,a
276	ld a,c	276	ld a,c
277	exx	277	exx
278	ex de,hl	278	ex de,hl
Line 281...		Line 281...
281	ld a,c	281	ld a,c
282	exx	282	exx
283	ld h,a	283	ld h,a
284	ret	284	ret
285		285
286	; hl'hl=reminder	286	; HL'HL = reminder
287	; de'de=divisor	287	; DE'DE = divisor
288	; a=divident	288	; A = divident
289	.ldiv_8 ld b, 8	289	.ldiv_8 ld b, 8
290	rla	290	rla
291	.ldiv_8_0 adc hl,hl	291	.ldiv_8_0 adc hl,hl
292	exx	292	exx
293	adc hl,hl	293	adc hl,hl
Line 303...		Line 303...
303	exx	303	exx
304	.ldiv_8_1 rla	304	.ldiv_8_1 rla
305	djnz .ldiv_8_0	305	djnz .ldiv_8_0
306	ret	306	ret
307		307
308	;[HEX6DEC]	308	; HEX6DEC
309	;HLBCDE->текст	309	; HLBCDE->текст
310		310
311	.HEX6DEC	311	.HEX6DEC
312		312
313		-
314	;[HEX4DEC]	313	; HEX4DEC
315	;BCDE->текст	314	; BCDE->текст
316	.HEX4DEC EXX	315	.HEX4DEC EXX
317	LD HL,VARS_TXT_DEC	316	LD HL,VARS_TXT_DEC
318	PUSH HL	317	PUSH HL
319	PUSH HL	318	PUSH HL
Line 340...		Line 339...
340	INC HL	339	INC HL
341	DJNZ .H2D2	340	DJNZ .H2D2
342	.H2D3 POP HL	341	.H2D3 POP HL
343	RET	342	RET
344		343
345	;[HEX2DEC]	344	; HEX2DEC
346	;DE->текст	345	; DE->текст
347	.HEX2DEC EXX	346	.HEX2DEC EXX
348	LD HL,VARS_TXT_DEC	347	LD HL,VARS_TXT_DEC
349	PUSH HL	348	PUSH HL
350	PUSH HL	349	PUSH HL
Line 352...		Line 351...
352	EXX	351	EXX
353	LD HL,.CHISLA2	352	LD HL,.CHISLA2
354	LD BC,0	353	LD BC,0
355	JR .H2D1-(4*3)	354	JR .H2D1-(4*3)
356		355
357	;[HEX1DEC]	356	; HEX1DEC
358	;E->текст	357	; E->текст
359	.HEX1DEC EXX	358	.HEX1DEC EXX
360	LD HL,VARS_TXT_DEC	359	LD HL,VARS_TXT_DEC
361	PUSH HL	360	PUSH HL
362	PUSH HL	361	PUSH HL
Line 382...		Line 381...
382	.CHISLA2 DD 10000	381	.CHISLA2 DD 10000
383	DD 1000	382	DD 1000
384	.CHISLA1 DD 100	383	.CHISLA1 DD 100
385	DD 10	384	DD 10
386		385
387	;[BCDE-(ADR)=BCDE]	386	; BCDE - (ADR) = BCDE
388	.BCDEMHL XOR A	387	.BCDEMHL XOR A
389	EX AF,AF'	388	EX AF,AF'
390	.BCDEMHL1 LD A,E	389	.BCDEMHL1 LD A,E
391	SUB (HL)	390	SUB (HL)
392	INC HL	391	INC HL
Line 407...		Line 406...
407	DEC HL	406	DEC HL
408	EX AF,AF'	407	EX AF,AF'
409	INC A	408	INC A
410	EX AF,AF'	409	EX AF,AF'
411	LD A,B	410	LD A,B
412	CP 0XC4	411	CP 0xC4
413	JR C,.BCDEMHL1	412	JR C,.BCDEMHL1
414	LD A,(HL)	413	LD A,(HL)
415	ADD A,E	414	ADD A,E
416	LD E,A	415	LD E,A
417	INC HL	416	INC HL
Line 440...		Line 439...
440	LD (HL),A	439	LD (HL),A
441	INC HL	440	INC HL
442	EXX	441	EXX
443	RET	442	RET
444		443
445	;[BCDE=BCDE+HL]	444	; BCDE = BCDE + HL
446	.BCDE_BCDE_HL ADD HL,DE	445	.BCDE_BCDE_HL ADD HL,DE
447	EX DE,HL	446	EX DE,HL
448	LD HL,0	447	LD HL,0
449	ADC HL,BC	448	ADC HL,BC
450	LD B,H	449	LD B,H

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(root)/rom/page5/source/math.a80 – Rev 952 → 1186