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// Enable or disable the use of a display shield designed for use on
// an Arduino Uno (or compatible) on an Arduino Mega
//
// ** Currently only available for 8bit display shields **
//
// Uncomment the following line to enable this feature
//#define USE_UNO_SHIELD_ON_MEGA 1
//********************************************************************
// *** Hardwarespecific defines ***
#define cbi(reg, bitmask) *reg &= ~bitmask
#define sbi(reg, bitmask) *reg |= bitmask
#define pulse_high(reg, bitmask) sbi(reg, bitmask); cbi(reg, bitmask);
#define pulse_low(reg, bitmask) cbi(reg, bitmask); sbi(reg, bitmask);
#define cport(port, data) port &= data
#define sport(port, data) port |= data
#define swap(type, i, j) {type t = i; i = j; j = t;}
#define fontbyte(x) pgm_read_byte(&cfont.font[x])
#define regtype volatile uint8_t
#define regsize uint8_t
#define bitmapdatatype unsigned int*
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