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ISYS8020: Fix format of file

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Bill Beech 2015-05-08 15:27:29 -07:00
parent 44e5c228c7
commit 06f9cbe41d
1 changed files with 65 additions and 55 deletions
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120
Intel-Systems/common/i8259.c
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@ -2,29 +2,35 @@
Copyright (c) 2010, William A. Beech
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
WILLIAM A. BEECH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
WILLIAM A. BEECH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of William A. Beech shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from William A. Beech.
Except as contained in this notice, the name of William A. Beech shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from William A. Beech.
These functions support a simulated i8259 interface device on an iSBC.
24 Jan 13 - Original file.
NOTES:
This software was written by Bill Beech, 24 Jan 13, to allow emulation of
more complex Multibus Computer Systems.
This program simulates up to 2 i8259 devices. It handles 1 i8259
device on the iSBC 80/20 and iSBC 80/30 SBCs. Other devices could be on
other multibus boards in the simulated system.
*/
#include "system_defs.h" /* system header in system dir */
@ -59,8 +65,8 @@ int32 icw_num0 = 1, icw_num1 = 1;
/* i8255 Standard I/O Data Structures */
UNIT i8259_unit[] = {
{ UDATA (0, 0, 0) },
{ UDATA (0, 0, 0) }
{ UDATA (0, 0, 0) }, /* i8259 0 */
{ UDATA (0, 0, 0) } /* i8259 1 */
};
DEBTAB i8259_debug[] = {
@ -75,10 +81,10 @@ DEBTAB i8259_debug[] = {
};
REG i8259_reg[] = {
{ HRDATA (IRR0, i8259_unit[0].u3, 8) },
{ HRDATA (IRR0, i8259_unit[0].u3, 8) }, /* i8259 0 */
{ HRDATA (ISR0, i8259_unit[0].u4, 8) },
{ HRDATA (IMR0, i8259_unit[0].u5, 8) },
{ HRDATA (IRR1, i8259_unit[1].u3, 8) },
{ HRDATA (IRR1, i8259_unit[1].u3, 8) }, /* i8259 0 */
{ HRDATA (ISR1, i8259_unit[1].u4, 8) },
{ HRDATA (IMR1, i8259_unit[1].u5, 8) },
{ NULL }
@ -114,6 +120,8 @@ DEVICE i8259_dev = {
IN or OUT instruction is issued.
*/
/* i8259 0 functions */
int32 i8259a0(int32 io, int32 data)
{
int32 bit;
@ -151,38 +159,6 @@ int32 i8259a0(int32 io, int32 data)
return 0;
}
int32 i8259b0(int32 io, int32 data)
{
if (io == 0) { /* read data port */
return (i8259_unit[0].u5); /* IMR */
} else { /* write data port */
if (icw_num0 >= 2 && icw_num0 < 5) { /* ICW mode */
switch (icw_num0) {
case 2: /* ICW2 */
i8259_icw2[0] = data;
break;
case 3: /* ICW3 */
i8259_icw3[0] = data;
break;
case 4: /* ICW4 */
if (i8259_icw1[0] & 0x01)
i8259_icw4[0] = data;
else
sim_printf("8259b-0: ICW4 not enabled - data=%02X\n", data);
break;
default:
sim_printf("8259b-0: ICW Error %02X\n", data);
break;
}
icw_num0++;
} else {
i8259_ocw1[0] = data; /* OCW0 */
}
}
i8259_dump(0);
return 0;
}
int32 i8259a1(int32 io, int32 data)
{
int32 bit;
@ -220,6 +196,40 @@ int32 i8259a1(int32 io, int32 data)
return 0;
}
/* i8259 1 functions */
int32 i8259b0(int32 io, int32 data)
{
if (io == 0) { /* read data port */
return (i8259_unit[0].u5); /* IMR */
} else { /* write data port */
if (icw_num0 >= 2 && icw_num0 < 5) { /* ICW mode */
switch (icw_num0) {
case 2: /* ICW2 */
i8259_icw2[0] = data;
break;
case 3: /* ICW3 */
i8259_icw3[0] = data;
break;
case 4: /* ICW4 */
if (i8259_icw1[0] & 0x01)
i8259_icw4[0] = data;
else
sim_printf("8259b-0: ICW4 not enabled - data=%02X\n", data);
break;
default:
sim_printf("8259b-0: ICW Error %02X\n", data);
break;
}
icw_num0++;
} else {
i8259_ocw1[0] = data; /* OCW0 */
}
}
i8259_dump(0);
return 0;
}
int32 i8259b1(int32 io, int32 data)
{
if (io == 0) { /* read data port */