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ports/emulators/doscmd/files/patch-fossil-support
Edwin Groothuis d2e53c6719 Fixes and extra functionality for emulators/doscmd 
A year or so ago I emailed these patches to the maintainer
	and didn't get any feedback. Just rediscovered them so
	figured I should submit them before they get lost...

	patch-bioscursor
	Fixes the BIOS cursor handling so that programs such as the
	DOS edit.com and qbasic.exe work correctly

	patch-desqview-timeslice
	Allows INT15 timeslicing so that programs which support it
	can avoid 100% CPU utilization

	patch-quitemode
	Adds a -Q option which suppresses all video IO. Also helps
	optimize the input behavior especially when polling for
	input.

	patch-fossil-support
	Adds a -F option which enables support for FOSSIL IO using stdio.

PR:		ports/114615
Submitted by:	Stephen Hurd <shurd@sasktel.net>
Approved by:	maintainer timeout
2007-09-23 12:48:46 +00:00

409 lines
9.7 KiB
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diff -u /root/doscmd-20040330/bios.c ./bios.c
--- /root/doscmd-20040330/bios.c Fri May 5 19:34:31 2006
+++ ./bios.c Fri May 5 19:39:27 2006
@@ -297,7 +297,10 @@
ivec[0x12] = vec;
register_callback(vec, int12, "int 12");
- vec = insert_softint_trampoline();
+ if(fossil)
+ vec = insert_fossil_softint_trampoline();
+ else
+ vec = insert_softint_trampoline();
ivec[0x14] = vec;
register_callback(vec, int14, "int 14");
diff -u /root/doscmd-20040330/callback.c ./callback.c
--- /root/doscmd-20040330/callback.c Fri May 5 19:34:31 2006
+++ ./callback.c Fri May 5 19:39:27 2006
@@ -76,6 +76,25 @@
2,
0,
};
+/*
+ * From the FOSSIL spec:
+ * The driver has a "signature" that can be used to determine whether it is
+ * present in memory. At offset 6 in the INT 14h service routine is a word,
+ * 1954h, followed by a byte that specifies the maximum function number
+ * supported by the driver. This is to make it possible to determine when a
+ * driver is present and what level of functionality it provides.
+ */
+u_char fossil_softint_trampoline[] = {
+ 0xf4, /* HLT */
+ 0xfb, /* STI */
+ 0xca, /* RETF 2 */
+ 2,
+ 0,
+ 0,
+ 0x54,
+ 0x19,
+ 0x1b, /* Max. Supported FOSSIL AH */
+};
u_char hardint_trampoline[] = {
0xf4, /* HLT */
0xcf, /* IRET */
@@ -102,6 +121,13 @@
{
return (insert_generic_trampoline(
sizeof(softint_trampoline), softint_trampoline));
+}
+
+u_long
+insert_fossil_softint_trampoline(void)
+{
+ return (insert_generic_trampoline(
+ sizeof(fossil_softint_trampoline), fossil_softint_trampoline));
}
u_long
diff -u /root/doscmd-20040330/callback.h ./callback.h
--- /root/doscmd-20040330/callback.h Fri May 5 19:34:31 2006
+++ ./callback.h Fri May 5 19:39:27 2006
@@ -9,5 +9,6 @@
callback_t find_callback(u_long);
u_long insert_generic_trampoline(size_t, u_char *);
u_long insert_softint_trampoline(void);
+u_long insert_fossil_softint_trampoline(void);
u_long insert_hardint_trampoline(void);
u_long insert_null_trampoline(void);
diff -u /root/doscmd-20040330/doscmd.c ./doscmd.c
--- /root/doscmd-20040330/doscmd.c Fri May 5 19:34:31 2006
+++ ./doscmd.c Fri May 5 19:39:27 2006
@@ -511,7 +511,7 @@
FILE *fp;
char *col;
- while ((c = getopt(argc, argv, "234AbCc:Dd:EGHIi:kLMOo:Pp:RrS:TtU:vVxXYz")) != -1) {
+ while ((c = getopt(argc, argv, "234AbCc:Dd:EFGHIi:kLMOo:Pp:RrS:TtU:vVxXYz")) != -1) {
switch (c) {
case '2':
debug_flags |= D_TRAPS2;
@@ -551,6 +551,9 @@
break;
case 'E':
debug_flags |= D_EXEC;
+ break;
+ case 'F':
+ fossil = 1;
break;
case 'G':
debug_flags |= D_VIDEO;
diff -u /root/doscmd-20040330/doscmd.h ./doscmd.h
--- /root/doscmd-20040330/doscmd.h Fri May 5 19:34:31 2006
+++ ./doscmd.h Fri May 5 19:39:27 2006
@@ -224,6 +224,9 @@
extern int search_floppy(int i);
extern void disk_bios_init(void);
+/* int14.c */
+extern int fossil;
+
/* int16.c */
void int16(regcontext_t *);
diff -u /root/doscmd-20040330/int14.c ./int14.c
--- /root/doscmd-20040330/int14.c Fri May 5 19:34:31 2006
+++ ./int14.c Fri May 5 20:23:09 2006
@@ -46,6 +46,9 @@
#include "AsyncIO.h"
#include "com.h"
+/* exports */
+int fossil = 0;
+
#define N_BYTES 1024
struct com_data_struct {
@@ -58,7 +61,9 @@
int ids; /* input data size */
int ods; /* output data size */
int emptyint;
+ int fossil_mode; /* FOSSIL has been enabled */
struct termios tty;
+ unsigned char param; /* Copy of init params */
unsigned char div_latch[2]; /* mirror of 16550 R0':R1'
read/write */
unsigned char int_enable; /* mirror of 16550 R1 read/write */
@@ -257,7 +262,7 @@
struct com_data_struct *cdsp;
int i;
- debug(D_PORT, "int14: dl = 0x%02X, al = 0x%02X.\n", R_DL, R_AL);
+ debug(D_PORT, "int14: ah = 0x%02X, dl = 0x%02X, al = 0x%02X.\n", R_AH, R_DL, R_AL);
if (R_DL >= N_COMS_MAX) {
if (vflag)
dump_regs(REGS);
@@ -269,16 +274,31 @@
case 0x00: /* Initialize Serial Port */
com_set_line(cdsp, R_DL + 1, R_AL);
R_AH = get_status(cdsp);
- R_AL = 0;
+ if (cdsp->fossil_mode) {
+ R_AL = 0x08;
+ R_AL |= 0x80;
+ }
+ else
+ R_AL = 0;
break;
case 0x01: /* Write Character */
if (write_char(cdsp, R_AL)) {
- R_AH = get_status(cdsp);
+ R_AH = get_status(cdsp);
+ if (cdsp->fossil_mode) {
+ R_AL = 0x08;
+ R_AL |= 0x80;
+ }
+ else
R_AL = 0;
} else {
- debug(D_PORT, "int14: lost output character 0x%02x\n", R_AL);
- R_AH = LS_SW_TIME_OUT;
+ debug(D_PORT, "int14: lost output character 0x%02x\n", R_AL);
+ R_AH = LS_SW_TIME_OUT;
+ if (cdsp->fossil_mode) {
+ R_AL = 0x08;
+ R_AL |= 0x80;
+ }
+ else
R_AL = 0;
}
break;
@@ -296,28 +316,193 @@
case 0x03: /* Status Request */
R_AH = get_status(cdsp);
- R_AL = 0;
+ if (cdsp->fossil_mode) {
+ R_AL = 0x08;
+ R_AL |= 0x80;
+ }
+ else
+ R_AL = 0;
break;
case 0x04: /* Extended Initialization */
- R_AX = (LS_SW_TIME_OUT) << 8;
+ if (fossil) {
+ cdsp->fossil_mode = 1;
+ R_AX = 0x1954;
+ R_BL = 0x1b; /* Max supported FOSSIL AH */
+ R_BH = 5;
+ }
+ else
+ R_AX = (LS_SW_TIME_OUT) << 8;
break;
- case 0x05: /* Modem Control Register operations */
- switch (R_AH) {
- case 0x00: /* Read Modem Control Register */
+ case 0x05: /* Modem Control Register operations/FOSSIL deinit */
+ if (fossil && cdsp->fossil_mode)
+ cdsp->fossil_mode = 0;
+ else {
+ switch (R_AH) {
+ case 0x00: /* Read Modem Control Register */
R_AX = (LS_SW_TIME_OUT) << 8;
break;
- case 0x01: /* Write Modem Control Register */
+ case 0x01: /* Write Modem Control Register */
R_AX = (LS_SW_TIME_OUT) << 8;
break;
- default:
+ default:
unknown_int3(0x14, 0x05, R_AL, REGS);
break;
+ }
}
break;
+
+ case 0x06: /* FOSSIL raise/lower DTR */
+ if(cdsp->fossil_mode) {
+ switch (R_AL) {
+ case 0:
+ ioctl(cdsp->fd, TIOCCDTR);
+ break;
+ case 1:
+ ioctl(cdsp->fd, TIOCSDTR);
+ break;
+ }
+ break;
+ }
+
+ case 0x08: /* FOSSIL Flush output buffer */
+ if(cdsp->fossil_mode) {
+ flush_out(cdsp);
+ break;
+ }
+
+ case 0x09: /* FOSSIL Purge output buffer */
+ if(cdsp->fossil_mode) {
+ cdsp->ods = 0;
+ break;
+ }
+
+ case 0x0a: /* FOSSIL Purge input buffer */
+ if(cdsp->fossil_mode) {
+ cdsp->ids = 0;
+ break;
+ }
+
+ case 0x0b: /* FOSSIL Transmit no wait */
+ if(cdsp->fossil_mode) {
+ if (cdsp->ods < N_BYTES) {
+ if (write_char(cdsp, R_AL))
+ R_AX = 1;
+ else
+ R_AX = 0;
+ }
+ else
+ R_AX = 0;
+ break;
+ }
+
+ case 0x0c: /* FOSSIL Non-destructive read-ahead */
+ if(cdsp->fossil_mode) {
+ if(cdsp->ods) {
+ R_AH = 0;
+ R_AL = cdsp->inbuf[0];
+ } else
+ R_AX = 0xffff;
+ break;
+ }
+
+ case 0x0f: /* FOSSIL Set flow control */
+ if(cdsp->fossil_mode) {
+ if(R_AL & 0x01) /* Enable output Xon/Xoff */
+ cdsp->tty.c_iflag |= IXON;
+ else
+ cdsp->tty.c_iflag &= ~(IXON);
+
+ if(R_AL & 0x02) /* Enable CTR/RTS */
+ cdsp->tty.c_cflag |= CCTS_OFLOW|CRTS_IFLOW;
+ else
+ cdsp->tty.c_iflag &= ~(CCTS_OFLOW|CRTS_IFLOW);
+
+ if(R_AL & 0x08) /* Enable input Xon/Xoff */
+ cdsp->tty.c_iflag |= IXOFF;
+ else
+ cdsp->tty.c_iflag &= ~(IXOFF);
+
+ tcsetattr(cdsp->fd, 0, &cdsp->tty);
+ break;
+ }
+
+ case 0x18: /* FOSSIL Read block */
+ if(cdsp->fossil_mode) {
+ int rd = R_CX;
+
+ input(cdsp, 0);
+ if(rd > cdsp->ids)
+ rd=cdsp->ids;
+ if(rd) {
+ memmove((char *)MAKEPTR(R_ES, R_DI), cdsp->inbuf, rd);
+ if(rd < cdsp->ids)
+ memmove(cdsp->inbuf, cdsp->inbuf + rd, N_BYTES - rd);
+ cdsp->ids -= rd;
+ R_AX = rd;
+ } else
+ R_AX = 0;
+ break;
+ }
+
+ case 0x19: /* FOSSIL Write block */
+ if(cdsp->fossil_mode) {
+ int wr = R_CX;
+ if(wr > N_BYTES - cdsp->ods)
+ wr=N_BYTES - cdsp->ods;
+ if(wr) {
+ memcpy(cdsp->outbuf + cdsp->ods, (char *)MAKEPTR(R_ES, R_DI), wr);
+ cdsp->ods += wr;
+ output(cdsp);
+ R_AX = wr;
+ } else
+ R_AX = 0;
+ break;
+ }
+
+ case 0x1a: /* FOSSIL Break begin/end */
+ if(cdsp->fossil_mode) {
+ switch(R_AL) {
+ case 0:
+ ioctl(cdsp->fd, TIOCCBRK);
+ break;
+ case 1:
+ ioctl(cdsp->fd, TIOCSBRK);
+ break;
+ }
+ break;
+ }
+
+ case 0x1b: /* FOSSIL Driver information */
+ if(cdsp->fossil_mode) {
+ unsigned char *p;
+ int bufpos=0;
+ int info_size=19;
+ const char *id_string="doscmd FOSSIL";
+ p = (unsigned char *)MAKEPTR(R_ES, R_DI);
+ p[bufpos++]=info_size&0xff;
+ p[bufpos++]=(info_size>>8)&0xff;
+ p[bufpos++]=5;
+ p[bufpos++]=0;
+ PUTVEC(*(u_short *)p, *(ushort *)(p + sizeof(u_short)), (u_long)id_string);
+ bufpos+=sizeof(u_short)*2;
+ p[bufpos++]=N_BYTES & 0xff;
+ p[bufpos++]=(N_BYTES>>8) & 0xff;
+ p[bufpos++]=(N_BYTES - cdsp->ids) & 0xff;
+ p[bufpos++]=((N_BYTES - cdsp->ids) >> 8) & 0xff;
+ p[bufpos++]=N_BYTES & 0xff;
+ p[bufpos++]=(N_BYTES>>8) & 0xff;
+ p[bufpos++]=(N_BYTES - cdsp->ods) & 0xff;
+ p[bufpos++]=((N_BYTES - cdsp->ods) >> 8) & 0xff;
+ p[bufpos++]=80;
+ p[bufpos++]=25;
+ p[bufpos++]=cdsp->param & BITRATE_9600;
+ break;
+ }
+
default:
unknown_int2(0x14, R_AH, REGS);
break;
@@ -353,6 +538,7 @@
port, cdsp->path);
return;
}
+ cdsp->param = param;
cdsp->ids = cdsp->ods = cdsp->emptyint = 0;
cdsp->int_enable = 0;
@@ -402,12 +588,24 @@
}
switch (param & BITRATE_9600) {
case BITRATE_110:
- speed = B110;
- spd = 110;
+ if (fossil) {
+ speed = B19200;
+ spd = 19200;
+ }
+ else {
+ speed = B110;
+ spd = 110;
+ }
break;
case BITRATE_150:
- speed = B150;
- spd = 150;
+ if (fossil) {
+ speed = B38400;
+ spd = 38400;
+ }
+ else {
+ speed = B150;
+ spd = 150;
+ }
break;
case BITRATE_300:
speed = B300;
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