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SCP: Updated display to current.

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This commit is contained in:
Richard Cornwell
2019-11-24 13:56:15 -05:00
parent 5e5c6af5eb
commit 9cef8d12c2
2 changed files with 49 additions and 3 deletions
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46
display/type340.c
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@@ -115,9 +115,7 @@ enum jump_type { DJP=2, DJS=3, DDS=1 }; /* type 347 */
/* put all the state in a struct "just in case" */
static struct type340 {
#ifdef NOTYET
ty340word DAC; /* Display Address Counter */
#endif
ty340word status; /* see ST340_XXX in type340.h */
signed short xpos, ypos; /* 10 bits, signed (for OOB checks) */
char initialized; /* 0 before display_init */
@@ -143,7 +141,6 @@ static struct type340 {
#define UNIT(N) (u340+(N))
#endif
#if 0
/* NOT USED WITH PDP-6 Type 344 Interface!! */
void
ty340_set_dac(ty340word addr)
@@ -157,7 +154,50 @@ ty340_set_dac(ty340word addr)
u->status = 0; /* XXX just clear stopped? */
ty340_rfd(); /* ready for data */
}
void
ty340_cycle(void)
{
struct type340 *u = UNIT(0);
if (u->status == 0) {
ty340word insn = ty340_fetch(u->DAC);
u->status = ty340_instruction (insn);
u->DAC = (u->DAC + 1) & 07777;
}
}
ty340word
ty340_get_dac(void)
{
struct type340 *u = UNIT(0);
return u->DAC;
}
ty340word
ty340_get_asr(void)
{
#if TYPE347
struct type340 *u = UNIT(0);
return u->ASR;
#else
return 0;
#endif
}
ty340word
ty340_sense(ty340word flags)
{
struct type340 *u = UNIT(0);
return u->status & flags;
}
void
ty340_clear(ty340word flags)
{
struct type340 *u = UNIT(0);
u->status &= ~flags;
}
ty340word
ty340_reset(void *dptr)

6
display/type340.h
View File

@@ -49,7 +49,13 @@ typedef unsigned int ty340word;
ty340word ty340_reset(void *);
ty340word ty340_status(void);
ty340word ty340_instruction(ty340word inst);
ty340word ty340_get_dac(void);
ty340word ty340_get_asr(void);
ty340word ty340_sense(ty340word);
void ty340_set_dac(ty340word addr);
void ty340_clear(ty340word addr);
void ty340_cycle(void);
void ty340_set_status(ty340word);
void ty342_set_grid(int, int);
/*