1. guide

1.1 Purpose

By incorporating this library into the system under development, you can display character strings on the screen, input data using the software keyboard, and read and write memory contents.

1.2 Explanation

• This library uses the VDP2 graphics library to build a simple debugging environment on top of NBG0 on the normal scroll screen. This library cannot be used unless you use the VDP2 graphics library.

• This library only supports dedicated pads. You cannot use this library without using the peripheral library.

1.3 Limitations

The debug display screen uses normal scroll 0 with priority 7.
Therefore, lower the priority of other sprite surfaces and scroll surfaces as necessary.

1.4 Program description example

An example of an actual program in C language is shown below.

#include "sega_scl.h"
#include "sega_dbg.h"


void err(Uint8 *mess);



Uint16 PadData;

main()
{
          SCL_Vdp2Init();
          DBG_Initial(&PadData,RGB16_COLOR(31,31,31),0);

          .......... /* Program */

          if(......)     
                    err("An error occurred in the ~ function of main()");
          .......... /* Program */


}

void err(Uint8 *mess)
{
          DBG_Printf("%s\n",mess); /* Display message */
          DBG_Monitor(); /* Create a simple debug environment *

}