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display: Make it possible to adjust Type 342 character grid size.

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This commit is contained in:
Lars Brinkhoff 2019-01-14 12:57:46 -08:00 • committed by Mark Pizzolato
parent 5ba6aacace
commit 037981d583
2 changed files with 17 additions and 4 deletions
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20
display/type340.c
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@ -122,6 +122,8 @@ static struct type340 {
unsigned char intensity; /* 3 bits */
#if TYPE342
unsigned char shift; /* 1 bit */
unsigned char width; /* character grid width */
unsigned char height; /* character grid height */
#endif
#if TYPE347
ty340word ASR; /* Address Save Register */
@ -167,6 +169,8 @@ ty340_reset(void *dptr)
u->scale = 1;
#if TYPE342
u->shift = 0;
u->width = 6;
u->height = 9;
#endif
#if TYPE347
u->SAVE_FF = 0;
@ -709,6 +713,14 @@ static const unsigned char chars[128][6] = {
{ 0376, 0376, 0376, 0376, 0376, 0 } /* 77 ??? */
};
void
ty342_set_grid(int w, int h)
{
struct type340 *u = UNIT(0);
u->width = w;
u->height = h;
}
/*
* type 342 Character/Symbol generator for type 340 display
* return true if ESCaped
@ -725,7 +737,7 @@ character(int n, unsigned char c)
flags = chars[c][5];
if (flags & CH_LF) { /* LF */
u->ypos -= u->12*s;
u->ypos -= u->height*s;
if (u->ypos < 0) {
u->status |= ST340_HEDGE;
u->ypos = 0;
@ -747,8 +759,8 @@ character(int n, unsigned char c)
if (flags & CH_ESC) { /* escape */
return 1;
}
if ((flags & CH_NSPC) && u->xpos >= u->7*s) {
u->xpos -= u->7*s; /* non spacing character */
if ((flags & CH_NSPC) && u->xpos >= u->width*s) {
u->xpos -= u->width*s; /* non spacing character */
}
/* plot character from character set selected by "shift" */
for (x = 0; x < 5; x++) { /* column: 0 to 4, left to right */
@ -759,7 +771,7 @@ character(int n, unsigned char c)
}
}
}
u->xpos += 7*s;
u->xpos += u->width*s;
if (u->xpos > 1023) {
u->xpos = 1023;
u->status |= ST340_VEDGE;

1
display/type340.h
View file

@ -50,6 +50,7 @@ ty340word ty340_reset(void *);
ty340word ty340_status(void);
ty340word ty340_instruction(ty340word inst);
void ty340_set_dac(ty340word addr);
void ty342_set_grid(int, int);
/*
* calls from type340.c into host simulator