github.com/prirun.p50em
1
0
Fork 0
mirror of https://github.com/prirun/p50em.git synced 2026-04-02 19:40:10 +00:00
Code Issues Releases Wiki Activity

devamlc: minor edits

Browse Source
This commit is contained in:
Jim
2011-09-16 09:46:51 -04:00
parent f912f5dcc5
commit 3a64f463f0
1 changed files with 17 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
devamlc.h
View File

@@ -36,7 +36,7 @@
is why normal interactive typing works: no EOR occurs for single
characters; they are read periodically when CTI occurs
- the AMLDIM processes needs the periodic clock line CTI interrupts
- the AMLDIM process needs the periodic clock line CTI interrupts
to cause it to run periodically, but does not rely on the frequency
of the interrupts for timing; it uses the Primos clock process
timers for real-time activities. This allows the emulator the
@@ -189,7 +189,7 @@ int devamlc (int class, int func, int device) {
actually connected, ie, an AMLC line may be tied to a specific
serial device (like a USB->serial gizmo), but the USB device may
not be plugged in. The connection type would be CT_SERIAL but
the line's fd would be zero and the "connected" bit would be 0 */
the line's fd would be -1 and the "connected" bit would be 0 */
#define CT_SOCKET 1
#define CT_SERIAL 2
@@ -598,7 +598,7 @@ int devamlc (int class, int func, int device) {
}
} else if (func == 011) { /* input ID */
crs[A] = 020000 | 054; /* 020000 = QAMLC */
crs[A] = 020054; /* 020000 = QAMLC */
IOSKIP;
} else {
@@ -679,10 +679,10 @@ int devamlc (int class, int func, int device) {
the emulator. Bit 6 is the state of DTR. The values for
bits 5-7 are:
0x0 - no low-level flow control, like the Prime
0x1 - xon/xoff flow control (2413 becomes 3413)
1x0 - cts/rts flow control (2413 becomes 6413)
1x1 - dsr/dtr flow control (2413 becomes 7413)
0_0 - no low-level flow control, like the Prime
0_1 - xon/xoff flow control (2413 becomes 3413)
1_0 - cts/rts flow control (2413 becomes 6413)
1_1 - dsr/dtr flow control (2413 becomes 7413)
NOTE: bit 11 also appears to be free, but Primos doesn't
let it flow through to the AMLC controller. :(
@@ -772,8 +772,9 @@ int devamlc (int class, int func, int device) {
dc[dx].recvenabled |= BITMASK16(lx+1);
else
dc[dx].recvenabled &= ~BITMASK16(lx+1);
if (dc[dx].ctinterrupt)
if (dc[dx].ctinterrupt) {
AMLC_SET_POLL;
}
IOSKIP;
/* this is a new "experimental" OTA */
@@ -823,9 +824,7 @@ int devamlc (int class, int func, int device) {
}
} else {
ipaddr = ntohl(addr.sin_addr.s_addr);
snprintf(ipstring, sizeof(ipstring), "%d.%d.%d.%d", (ipaddr&0xFF000000)>>24, (ipaddr&0x00FF0000)>>16,
(ipaddr&0x0000FF00)>>8, (ipaddr&0x000000FF));
//printf("Connect from IP %s\n", ipstring);
//snprintf(ipstring, sizeof(ipstring), "%d.%d.%d.%d", (ipaddr&0xFF000000)>>24, (ipaddr&0x00FF0000)>>16, (ipaddr&0x0000FF00)>>8, (ipaddr&0x000000FF)); printf("Connect from IP %s\n", ipstring);
/* if there are dedicated AMLC lines (specific IP address), we
have to make 2 passes: the first pass checks for IP address
@@ -903,7 +902,7 @@ int devamlc (int class, int func, int device) {
/* do a transmit scan loop for every line. This loop is fairly
efficient because Primos turns off xmitenable on DMQ lines
after a short time w/o any output.
after a short time (5 seconds) w/o any output.
NOTE: it's important to do xmit processing even if a line is
not currently connected, to drain the tty output buffer.
@@ -1008,14 +1007,15 @@ int devamlc (int class, int func, int device) {
Because the size of the AMLC tumble tables is limited, this
could pose a denial of service issue. Input is processed in a
round to be more fair with this limited resource. Better yet,
the tumble table space could be apportioned for each line with
data waiting to be read.
round to be more fair with this limited resource.
Update 9/16/2011: the tumble table space is apportioned for
each line with data waiting to be read.
The AMLC tumble tables should never overflow, because we only
read as many characters from the socket buffers as will fit in
the tumble tables. However, the tty line buffers may overflow,
causing data from the terminal to be dropped. */
the tumble tables. However, the user input ring buffer may
overflow, causing data from the terminal to be dropped. */
dorecv:
neweor = 0;