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PDP11: Add BOOT ability to the VT device to run the Lunar Lander program

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This commit is contained in:
Mark Pizzolato
2016-01-10 17:35:18 -08:00
parent 542b2cbf08
commit 6210ba2059
4 changed files with 908 additions and 7 deletions
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24
PDP11/pdp11_vt.c
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@@ -246,14 +246,36 @@ vt_reset(DEVICE *dptr)
return auto_config ("VT", (dptr->flags & DEV_DIS) ? 0 : 1);
}
#include "pdp11_vt_lunar_rom.h" /* Lunar Lander image */
/*
* GT4x/GT62 bootstrap (acts as remote terminal)
*
*/
t_stat
vt_boot(int32 unit, DEVICE *dptr)
{
t_stat r;
extern int32 saved_PC;
extern uint16 *M;
/* XXX should do something like vt11_set_dpc(&appropriate_ROM_image) */
return SCPE_NOFNC; /* not yet implemented */
/* Instead, since that won't be too useful.... */
/* Load and start Lunar Lander which has the potential to be fun! */
sim_set_memory_load_file (BOOT_CODE_ARRAY, BOOT_CODE_SIZE);
r = load_cmd (0, BOOT_CODE_FILENAME);
sim_set_memory_load_file (NULL, 0);
/* Lunar Lander presumes a VT device vector of 320 */
if (0320 != vt_dib.vec) { /* If that is not the case, then copy the 320 vector to */
M[vt_dib.vec >> 1] = M[0320 >> 1];
M[(vt_dib.vec >> 1) + 1] = M[(0320 >> 1) + 1];
}
M[032530>>1] = 1;
cpu_set_boot (saved_PC);
set_cmd (0, "VT SCALE=1");
set_cmd (0, "VT CRT=VR14");
return r;
}
/* SET/SHOW VT options: */