Sharp MZ-3500 User Manual download pdf (Page 45)

MZ3500

[Explanation]

C - COMMAND CODE 1 To A

P_ parameter »

Display dot, specify the display address of the VRAM and

the dot address. Set the command code of the SET mode

(set mode plus CLEAR, REPLACE, and COMPLEMENT

modes using "WRITE", and specify to start with

"VECTE". Dot address is structured on the screen in the

following manner.

Address 0001

dAD= 0 1 2 3 t 5 6 7 8 9 10 11 12 13 14 15

[Dot display program example-1]

HL ,5000H '

(HL).49H

5000 ^ 49 H

INC

5001 — 01 H

CSRWdata

LD (HL),01H

5002 ^ 00 H

I NC L

5003 — 30 H

(HL),ООН

5004 23 H } WRITE data

1 NC

5005 — 6CH } VECTE data

(HL) ЗОН

I NC

(HL),23H

INC

(HL),6CH -

C , 60H

C — 60H (port address during graphic draw)

В , 4H

В — Byte size CSRW data

HL ,5000H

HL — Top address of the CSRW data

CALL

GDC

Command, parameter of CSRW — GDC

C , 60H

В . IH

В — Byte size of the WRITE data

HL .5004H

; HL — Top address of the WRITE data

CALL

GDC

Command, parameter of WRITE - GDC

C , 60H

в . IH

; В — Byte number of the VECTE data

HL ,5005H

; HL — Top address of the VECTE data

CALL

GDC

; Command, parameter of the VECTE — GDC

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 115 116

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Sharp MZ-3500 User Manual Page 45

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