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ISYS8010, ISYS8020: Latest update

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This commit is contained in:
Bill Beech
2016-12-05 12:54:15 -07:00
parent 0ef87fac53
commit 2947c39ffe
34 changed files with 4084 additions and 897 deletions
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25
IBMPC-Systems/common/i8255.c
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@@ -26,7 +26,7 @@
MODIFICATIONS:
?? ??? 10 - Original file.
16 Dec 12 - Modified to use isbc_80_10.cfg file to set base and size.
16 Dec 12 - Modified to use isbc_80_10.cfg file to set baseport and size.
24 Apr 15 -- Modified to use simh_debug
NOTES:
@@ -83,7 +83,7 @@ extern uint16 port; //port called in dev_table[port]
/* function prototypes */
t_stat i8255_reset (DEVICE *dptr, uint16 base);
t_stat i8255_reset (DEVICE *dptr, uint16 baseport);
uint8 i8255_get_dn(void);
uint8 i8255s(t_bool io, uint8 data);
uint8 i8255a(t_bool io, uint8 data);
@@ -92,12 +92,12 @@ uint8 i8255c(t_bool io, uint8 data);
/* external function prototypes */
extern uint16 reg_dev(uint8 (*routine)(t_bool, uint8), uint16);
extern uint16 reg_dev(uint8 (*routine)(t_bool, uint8), uint16, uint8);
/* globals */
int32 i8255_devnum = 0; //actual number of 8255 instances + 1
uint16 i8255_port[4]; //base port registered to each instance
uint16 i8255_port[4]; //baseport port registered to each instance
/* these bytes represent the input and output to/from a port instance */
@@ -175,22 +175,23 @@ DEVICE i8255_dev = {
/* Reset routine */
t_stat i8255_reset (DEVICE *dptr, uint16 base)
t_stat i8255_reset (DEVICE *dptr, uint16 baseport)
{
if (i8255_devnum > I8255_NUM) {
sim_printf("i8255_reset: too many devices!\n");
return SCPE_MEM;
}
i8255_port[i8255_devnum] = reg_dev(i8255a, base);
reg_dev(i8255b, base + 1);
reg_dev(i8255c, base + 2);
reg_dev(i8255s, base + 3);
sim_printf(" 8255-%d: Reset\n", i8255_devnum);
sim_printf(" 8255-%d: Registered at %04X\n", i8255_devnum, baseport);
i8255_port[i8255_devnum] = baseport;
reg_dev(i8255a, baseport, i8255_devnum);
reg_dev(i8255b, baseport + 1, i8255_devnum);
reg_dev(i8255c, baseport + 2, i8255_devnum);
reg_dev(i8255s, baseport + 3, i8255_devnum);
i8255_unit[i8255_devnum].u3 = 0x9B; /* control */
i8255_A[i8255_devnum] = 0xFF; /* Port A */
i8255_B[i8255_devnum] = 0xFF; /* Port B */
i8255_C[i8255_devnum] = 0xFF; /* Port C */
sim_printf(" 8255-%d: Reset\n", i8255_devnum);
sim_printf(" 8255-%d: Registered at %03X\n", i8255_devnum, base);
i8255_devnum++;
return SCPE_OK;
}
@@ -202,7 +203,7 @@ uint8 i8255_get_dn(void)
for (i=0; i<I8255_NUM; i++)
if (port >=i8255_port[i] && port <= i8255_port[i] + 3)
return i;
sim_printf("i8255_get_dn: port %03X not in 8255 device table\n", port);
sim_printf("i8255_get_dn: port %04X not in 8255 device table\n", port);
return 0xFF;
}