38 lines
770 B
C++
38 lines
770 B
C++
#ifndef _IO_H
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#define _IO_H
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class io: public Memory::Device, public Display, Keyboard, public PIA {
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public:
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io(filer &files): Memory::Device(Memory::page_size), files(files) {}
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virtual void reset();
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virtual void down(uint8_t);
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virtual void up(uint8_t);
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virtual void operator=(uint8_t b) { PIA::write(_acc, b); }
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virtual operator uint8_t() { return PIA::read(_acc); }
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virtual void checkpoint(Stream &);
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virtual void restore(Stream &);
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virtual void write_portb(uint8_t);
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virtual uint8_t read_cra();
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void load();
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filer &files;
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static const uint8_t ROWS = 24;
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static const uint8_t COLS = 40;
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private:
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void display(uint8_t);
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void draw(char, int, int);
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void enter(uint8_t);
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bool _shift, _loading;
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uint8_t r, c;
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char screen[ROWS][COLS];
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};
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#endif
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