mirror of
https://git.FreeBSD.org/ports.git
synced 2024-10-30 21:49:25 +00:00
869622ad38
Technically, i consider this an excellent work. I've made some efforts to make it easier for people get it actually up & running. This would have required an image of a DOS boot floppy, which we cannot provide. Instead, i wrote a small bootstrap loader (basically a small more(1) clone with builtin text) that can be ``booted'' from. It instructs the user how to get the image of a bootable DOS floppy, and where to find the various files. (The bootstrap loader requires bcc to be recompiled, but i'm providing a gzip'ed/uuencoded version in the files directory as well.) The pkg directory is not yet done. Will follow RSN. :)
80 lines
1.8 KiB
Plaintext
80 lines
1.8 KiB
Plaintext
*** cpu.c.orig Wed Jun 22 16:24:50 1994
|
|
--- cpu.c Tue Jan 24 18:37:17 1995
|
|
***************
|
|
*** 1127,1132 ****
|
|
--- 1127,1133 ----
|
|
|
|
static INLINE2 void i_daa(void)
|
|
{
|
|
+ /* Opcode 0x27 */
|
|
if (AF || ((*bregs[AL] & 0xf) > 9))
|
|
{
|
|
*bregs[AL] += 6;
|
|
***************
|
|
*** 1300,1305 ****
|
|
--- 1301,1330 ----
|
|
c_ss = SegToMemPtr(SS);
|
|
}
|
|
|
|
+ static INLINE2 void i_das(void)
|
|
+ {
|
|
+ /* Opcode 0x2f */
|
|
+ if (AF || ((*bregs[AL] & 0xf) > 9))
|
|
+ {
|
|
+ *bregs[AL] -= 6;
|
|
+ AF = 1;
|
|
+ }
|
|
+ else
|
|
+ AF = 0;
|
|
+
|
|
+ if (CF || (*bregs[AL] > 0x9f))
|
|
+ {
|
|
+ *bregs[AL] -= 0x60;
|
|
+ CF = 1;
|
|
+ }
|
|
+ else
|
|
+ CF = 0;
|
|
+
|
|
+ SetPF(*bregs[AL]);
|
|
+ SetSFB(*bregs[AL]);
|
|
+ SetZFB(*bregs[AL]);
|
|
+ }
|
|
+
|
|
|
|
/* most XOR instructions go here */
|
|
|
|
***************
|
|
*** 4140,4146 ****
|
|
{
|
|
fprintf(stderr,"Error: Unimplemented opcode %02X at cs:ip = %04X:%04X\n",
|
|
c_cs[ip-1],sregs[CS],ip-1);
|
|
! exit(1);
|
|
}
|
|
|
|
|
|
--- 4165,4171 ----
|
|
{
|
|
fprintf(stderr,"Error: Unimplemented opcode %02X at cs:ip = %04X:%04X\n",
|
|
c_cs[ip-1],sregs[CS],ip-1);
|
|
! /* exit(1); */
|
|
}
|
|
|
|
|
|
***************
|
|
*** 4218,4224 ****
|
|
case 0x2c: i_sub_ald8(); break;
|
|
case 0x2d: i_sub_axd16(); break;
|
|
case 0x2e: i_cs(); break;
|
|
! case 0x2f: i_notdone(); break;
|
|
case 0x30: i_xor_br8(); break;
|
|
case 0x31: i_xor_wr16(); break;
|
|
case 0x32: i_xor_r8b(); break;
|
|
--- 4243,4249 ----
|
|
case 0x2c: i_sub_ald8(); break;
|
|
case 0x2d: i_sub_axd16(); break;
|
|
case 0x2e: i_cs(); break;
|
|
! case 0x2f: i_das(); break;
|
|
case 0x30: i_xor_br8(); break;
|
|
case 0x31: i_xor_wr16(); break;
|
|
case 0x32: i_xor_r8b(); break;
|