Apple-2-SW
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GWRAM.SYSTEM
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Added 16mb detection

This commit is contained in:
Zane Kaminski 2020-06-09 20:42:26 -04:00
parent 8a54a09ba0
commit 9ae4d72b65
3 changed files with 9 additions and 3 deletions
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bin/RAM2Eutil.dbg.po
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12
ram2e.c
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@ -149,7 +149,10 @@ static char ram2e_detect() {
/* ramworks_getsize() returns the number of banks of RAM2E aux memory */
uint8_t _rwsize;
static uint8_t ramworks_getsize() {
uint8_t _rwnot16mb;
static uint16_t ramworks_getsize() {
_rwnot16mb = 1; // Set "not 16 mb" flag
// Store bank number at address 0 in each bnak
__asm__("sta $C009"); // ALTZP
__asm__("ldy #$FF"); // Start at bank 0xFF
@ -168,6 +171,8 @@ static uint8_t ramworks_getsize() {
__asm__("cpy $00"); // Is bank num stored at address 0?
__asm__("bne %g", NotMem); // If not, skip increment
__asm__("inx"); // If so, increment bank count
__asm__("bne %g", NotMem); // Skip next if x!=0
__asm__("stx %v", _rwnot16mb); // Othwerwise rolled over so clear rwnot16mb
NotMem:
__asm__("iny"); // Move to next bank
__asm__("bne %g", CountLoop); // Repeat if not on bank 0
@ -176,7 +181,8 @@ static uint8_t ramworks_getsize() {
__asm__("sta $C008"); // STDZP
__asm__("stx %v", _rwsize); // _rwsize = X (bank count)
return _rwsize;
if (_rwnot16mb) { return _rwsize; }
else { return 256; }
}
/* set_mask_temp(...) sends the "Set RAMWorks Capacity Mask" to the RAM2E */
@ -211,7 +217,7 @@ static void set_nvm(char mask) {
static void menu(void)
{
uint8_t bankcount = ramworks_getsize();
uint16_t bankcount = ramworks_getsize();
gotoxy(5, 1);
cputs("-- RAM2E Capacity Settings --");
if (bankcount < 2) { gotoxy(5, 3); }