diff options
Diffstat (limited to 'tests/testbios.c')
| -rw-r--r-- | tests/testbios.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/tests/testbios.c b/tests/testbios.c new file mode 100644 index 0000000..99da5a6 --- /dev/null +++ b/tests/testbios.c @@ -0,0 +1,353 @@ +/*
+ This is a little turbo C program that executes
+ several int10, and let you inspect the content
+ of the vgabios area
+
+ It is used to test the behavior of the vgabios
+*/
+
+#include <stdio.h>
+#include <dos.h>
+#include <conio.h>
+
+
+typedef unsigned char Bit8u;
+typedef unsigned short Bit16u;
+
+typedef struct
+{Bit8u initial;
+ Bit8u current;
+ Bit16u nbcols;
+ Bit16u regen;
+ Bit16u start;
+ Bit16u curpos[8];
+ Bit8u curtyp;
+ Bit8u curpage;
+ Bit16u crtc;
+ Bit16u msr;
+ Bit16u cgapal;
+ Bit8u nbrows;
+ Bit16u cheight;
+ Bit8u ctl;
+ Bit8u switches;
+ Bit8u modeset;
+ Bit8u dcc;
+ Bit16u vsseg;
+ Bit16u vsoffset;
+} BIOSAREA;
+
+void int10ax0003(struct REGPACK *regs)
+{
+ regs->r_ax=0x0003;
+ intr(0x10,regs);
+}
+
+void int10ax02(struct REGPACK *regs)
+{
+ regs->r_ax=0x0200;
+ regs->r_bx=0x0000;
+ regs->r_dx=0x1710;
+ intr(0x10,regs);
+ printf("We are now at 24/17");
+}
+
+void int10ax03(struct REGPACK *regs)
+{
+ regs->r_ax=0x0300;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+ printf("\nCursor is ax%04x cx%04x dx%04x\n",regs->r_ax,regs->r_cx,regs->r_dx);
+}
+
+void int10ax0501(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0e61;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+ printf("We are now on page 2");
+}
+
+void int10ax0602(struct REGPACK *regs)
+{
+ regs->r_ax=0x0602;
+ regs->r_bx=0x0700;
+ regs->r_cx=0x0101;
+ regs->r_dx=0x0a0a;
+ intr(0x10,regs);
+ printf("Scrolled 2 up");
+}
+
+void int10ax0702(struct REGPACK *regs)
+{
+ regs->r_ax=0x0702;
+ regs->r_bx=0x0700;
+ regs->r_cx=0x0101;
+ regs->r_dx=0x0a0a;
+ intr(0x10,regs);
+ printf("Scrolled 2 down");
+}
+
+void int10ax08(struct REGPACK *regs)
+{
+ regs->r_ax=0x0800;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+}
+
+void int10ax09(struct REGPACK *regs)
+{
+ char attr;
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ for(attr=0;attr<16;attr++)
+ {printf("%02x ",attr);
+ regs->r_ax=0x0961+attr;
+ regs->r_bx=0x0100+attr;
+ regs->r_cx=0x0016;
+ intr(0x10,regs);
+ printf("\n");
+ }
+}
+
+void int10ax0a(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0a62;
+ regs->r_bx=0x0101;
+ regs->r_cx=0x0016;
+ intr(0x10,regs);
+}
+
+void int10ax0f(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0f00;
+ intr(0x10,regs);
+}
+
+void int10ax1b(struct REGPACK *regs)
+{unsigned char table[64];
+ unsigned char far *ptable;
+ int i;
+
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x1b00;
+ regs->r_bx=0x0000;
+ ptable=&table;
+ regs->r_es=FP_SEG(ptable);
+ regs->r_di=FP_OFF(ptable);
+ printf("Read state info in %04x:%04x\n",regs->r_es,regs->r_di);
+ intr(0x10,regs);
+
+ for(i=0;i<64;i++)
+ {if(i%16==0)printf("\n%02x ",i);
+ printf("%02x ",table[i]);
+ }
+ printf("\n");
+}
+
+static unsigned char var[64];
+
+void int10ax13(struct REGPACK *regs)
+{unsigned char far *pvar;
+
+ pvar=&var;
+
+ regs->r_ax=0x1300;
+ regs->r_bx=0x000b;
+ regs->r_dx=0x1010;
+ regs->r_cx=0x0002;
+ regs->r_es=FP_SEG(pvar);
+ regs->r_bp=FP_OFF(pvar);
+ pokeb(regs->r_es,regs->r_bp,'t');
+ pokeb(regs->r_es,regs->r_bp+1,'b');
+ printf("Writing from %04x:%04x\n",regs->r_es,regs->r_bp);
+ intr(0x10,regs);
+
+}
+
+void switch_50(struct REGPACK *regs)
+{
+ regs->r_ax=0x1202;
+ regs->r_bx=0x3000;
+ intr(0x10,regs);
+ regs->r_ax=0x0003;
+ intr(0x10,regs);
+ regs->r_ax=0x1112;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+}
+
+char exec_function(struct REGPACK *regs)
+{char c;
+
+ printf("--- Functions --------------------\n");
+ printf("a. int10 ax0003\t");
+ printf("b. int10 ax02\t");
+ printf("c. int10 ax03\t");
+ printf("d. int10 ax0501\n");
+ printf("e. int10 ax0602\t");
+ printf("f. int10 ax0702\t");
+ printf("g. int10 ax08\t");
+ printf("h. int10 ax09\t");
+ printf("i. int10 ax0a\n");
+ printf("j. int10 ax0f\t");
+ printf("k. int10 ax1b\t");
+ printf("l. int10 ax13\n");
+ printf("q. Quit\t");
+ printf("r. switch to 50 lines\n");
+ c=getche();
+
+ switch(c)
+ {case 'a':
+ int10ax0003(regs);
+ break;
+ case 'b':
+ int10ax02(regs);
+ break;
+ case 'c':
+ int10ax03(regs);
+ break;
+ case 'd':
+ int10ax0501(regs);
+ break;
+ case 'e':
+ int10ax0602(regs);
+ break;
+ case 'f':
+ int10ax0702(regs);
+ break;
+ case 'g':
+ int10ax08(regs);
+ break;
+ case 'h':
+ int10ax09(regs);
+ break;
+ case 'i':
+ int10ax0a(regs);
+ break;
+ case 'j':
+ int10ax0f(regs);
+ break;
+ case 'k':
+ int10ax1b(regs);
+ break;
+ case 'l':
+ int10ax13(regs);
+ break;
+ case 'q':
+ break;
+ case 'r':
+ switch_50(regs);
+ break;
+ default:
+ printf("No such function!\n");
+ }
+
+ if(c=='q')return 1;
+ while(kbhit()==0);
+ c=getch();
+
+ return 0;
+}
+
+void read_bios_area(BIOSAREA *biosarea)
+{
+ biosarea->initial=peekb(0x40,0x10);
+ biosarea->current=peekb(0x40,0x49);
+ biosarea->nbcols=peek(0x40,0x4a);
+ biosarea->regen=peek(0x40,0x4c);
+ biosarea->start=peek(0x40,0x4e);
+ biosarea->curpos[0]=peek(0x40,0x50);
+ biosarea->curpos[1]=peek(0x40,0x52);
+ biosarea->curpos[2]=peek(0x40,0x54);
+ biosarea->curpos[3]=peek(0x40,0x56);
+ biosarea->curpos[4]=peek(0x40,0x58);
+ biosarea->curpos[5]=peek(0x40,0x5a);
+ biosarea->curpos[6]=peek(0x40,0x5c);
+ biosarea->curpos[7]=peek(0x40,0x5e);
+ biosarea->curtyp=peek(0x40,0x60);
+ biosarea->curpage=peekb(0x40,0x62);
+ biosarea->crtc=peek(0x40,0x63);
+ biosarea->msr=peekb(0x40,0x65);
+ biosarea->cgapal=peekb(0x40,0x66);
+ biosarea->nbrows=peekb(0x40,0x84);
+ biosarea->cheight=peek(0x40,0x85);
+ biosarea->ctl=peekb(0x40,0x87);
+ biosarea->switches=peekb(0x40,0x88);
+ biosarea->modeset=peekb(0x40,0x89);
+ biosarea->dcc=peekb(0x40,0x8a);
+ biosarea->vsseg=peek(0x40,0xa8);
+ biosarea->vsoffset=peek(0x40,0xaa);
+}
+
+void show_bios_area(BIOSAREA *biosarea)
+{
+ printf("--- BIOS area --------------------\n");
+ printf("initial : %02x\t",biosarea->initial);
+ printf("current : %02x\t",biosarea->current);
+ printf("nbcols : %04x\t",biosarea->nbcols);
+ printf("regen : %04x\t",biosarea->regen);
+ printf("start : %04x\n",biosarea->start);
+ printf("curpos : %04x %04x %04x %04x %04x %04x %04x %04x\n",
+ biosarea->curpos[0], biosarea->curpos[1], biosarea->curpos[2], biosarea->curpos[3],
+ biosarea->curpos[4], biosarea->curpos[5], biosarea->curpos[6], biosarea->curpos[7]);
+ printf("curtyp : %04x\t",biosarea->curtyp);
+ printf("curpage : %02x\t",biosarea->curpage);
+ printf("crtc : %04x\t",biosarea->crtc);
+ printf("msr : %04x\n",biosarea->msr);
+ printf("cgapal : %04x\t",biosarea->cgapal);
+ printf("nbrows-1: %02x\t",biosarea->nbrows);
+ printf("cheight : %04x\t",biosarea->cheight);
+ printf("ctl : %02x\n",biosarea->ctl);
+ printf("switches: %02x\t",biosarea->switches);
+ printf("modeset : %02x\t",biosarea->modeset);
+ printf("dcc : %02x\t",biosarea->dcc);
+ printf("vs : %04x:%04x\n",biosarea->vsseg,biosarea->vsoffset);
+}
+
+void show_regs(struct REGPACK *regs)
+{
+ printf("--- Registers --------------------\n");
+ printf("ax %04x\t",regs->r_ax);
+ printf("bx %04x\t",regs->r_bx);
+ printf("cx %04x\t",regs->r_cx);
+ printf("dx %04x\t",regs->r_dx);
+ printf("ds %04x\t",regs->r_ds);
+ printf("si %04x\t",regs->r_si);
+ printf("es %04x\t",regs->r_es);
+ printf("di %04x\n",regs->r_di);
+}
+
+void reset_videomode()
+{
+ struct REGPACK regs;
+
+ regs.r_ax=0x0003;
+ intr(0x10,®s);
+}
+
+void main()
+{
+
+ BIOSAREA biosarea;
+ struct REGPACK regs;
+
+ directvideo=0;
+
+ while(1)
+ {
+ read_bios_area(&biosarea);
+
+ reset_videomode();
+ show_bios_area(&biosarea);
+ show_regs(®s);
+
+ if(exec_function(®s)!=0)break;
+ }
+}
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