mirror of
https://github.com/garrettsworkshop/GWRAM.SYSTEM.git
synced 2025-10-31 11:56:44 -07:00
RC
This commit is contained in:
Zane Kaminski
178
ram2gs.c
178
ram2gs.c
@@ -7,119 +7,10 @@
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#include "util.h"
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#include "gwconio.h"
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#include "ram2gs_asm.h"
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static void ram2gs_set(char en8meg, char enled) {
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char cmd = 0x10;
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if (en8meg) { cmd |= 0x01; }
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if (enled) { cmd |= 0x02; }
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ram2gs_cmd(cmd);
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}
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static void ram2gs_max_erase() { ram2gs_cmd(0x28); }
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static void ram2gs_max_set_nvm(char en8meg, char enled) {
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char i;
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// Clock in 0 to enable this setting entry
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ram2gs_cmd(0x20);
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ram2gs_cmd(0x22);
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if (en8meg) {
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// Clock in 1 to enable 8mb
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ram2gs_cmd(0x21);
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ram2gs_cmd(0x23);
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} else {
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// Clock in 0 to disable 8mb
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ram2gs_cmd(0x20);
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ram2gs_cmd(0x22);
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}
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if (enled) {
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// Clock in 0 to enable LED
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ram2gs_cmd(0x20);
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ram2gs_cmd(0x22);
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} else {
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// Clock in 1 to disable LED
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ram2gs_cmd(0x21);
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ram2gs_cmd(0x23);
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}
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// Clock in 13 dummy "1"s
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for (i = 0; i < 13; i++) {
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ram2gs_cmd(0x21);
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ram2gs_cmd(0x23);
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}
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// Program
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ram2gs_cmd(0x24);
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}
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static void ram2gs_spi_select() { ram2gs_cmd(0x34); }
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static void ram2gs_spi_deselect() { ram2gs_cmd(0x30); }
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static void ram2gs_spi_tx8(char data) {
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char i;
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for (i = 0; i < 8; i++) {
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ram2gs_cmd(0x34 + ((data >> (7-i)) & 1));
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ram2gs_cmd(0x36 + ((data >> (7-i)) & 1));
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}
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}
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static void ram2gs_spi_wren() {
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ram2gs_spi_deselect();
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ram2gs_spi_select();
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ram2gs_spi_tx8(0x06); // 0x06 is write enable
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ram2gs_spi_deselect();
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}
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static void ram2gs_spi_erase() {
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ram2gs_spi_wren();
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ram2gs_spi_select();
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ram2gs_spi_tx8(0x20); // 0x20 is sector erase (4 kB)
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ram2gs_spi_tx8(0x00); // address[23:16]
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ram2gs_spi_tx8(0x10); // address[15:8]
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ram2gs_spi_tx8(0x00); // address[7:0]
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ram2gs_spi_deselect();
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}
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static void ram2gs_spi_set_nvm(char en8meg, char enled) {
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ram2gs_spi_erase(); // First erase
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spin(33, 8); // Wait for >= 500ms on even the fastest systems.
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ram2gs_spi_wren();
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ram2gs_spi_select();
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ram2gs_spi_tx8(0x02); // 0x02 is page (byte) program
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ram2gs_spi_tx8(0x00); // address[23:16]
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ram2gs_spi_tx8(0x10); // address[15:8]
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ram2gs_spi_tx8(0x00); // address[7:0]
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// data[7:0]
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if (!en8meg && !enled) { ram2gs_spi_tx8(0x7F); }
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else if (!en8meg && enled) { ram2gs_spi_tx8(0x3F); }
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else if ( en8meg && !enled) { ram2gs_spi_tx8(0xFF); }
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else if ( en8meg && enled) { ram2gs_spi_tx8(0xBF); }
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ram2gs_spi_deselect();
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}
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static void ram2gs_erase(char typecode) {
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switch (typecode) {
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case 0x00: ram2gs_max_erase(); break; // Altera MAX II / V
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case 0x04: ram2gs_spi_erase(); break; // Lattice MachXO / iCE40 / AGM AG256
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//case 0x08: ram2gs_erase_lcmxo2(); break; // Lattice MachXO2
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}
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}
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static void ram2gs_set_nvm(char typecode, char en8meg, char enled) {
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switch (typecode) {
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case 0x00: ram2gs_max_set_nvm(en8meg, enled); break; // Altera MAX II / V
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case 0x04: ram2gs_spi_set_nvm(en8meg, enled); break; // Lattice MachXO / iCE40 / AGM AG256
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//case 0x08: ram2gs_set_nvm_lcmxo2(en8meg, enled); break; // Lattice MachXO2
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}
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}
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static void menu_led(char enled) {
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if (enled) {
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gwcputsxy(1, 15, "LED enabled. Press [L] to disable LED.");
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} else {
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gwcputsxy(1, 15, "LED disabled. Press [L] to enable LED.");
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}
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}
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#include "ram2gs_hal.h"
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static void menu()
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{
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uint8_t bankcount;
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clrscr(); // Clear screen
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gwcputsxy(5, 1, "-- RAM2GS Capacity Settings --");
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@@ -136,13 +27,19 @@ static void menu()
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gwcputsxy(1, 21, "nonvolatile memory, press Apple+number.");
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gwcputsxy(1, 23, "Press [Q] to quit without saving.");
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}
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bankcount = ram2gs_getsize();
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static void menu_size(uint16_t bankcount) {
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gotoxy(29, 3);
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printf("%d", bankcount * 64);
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gwcputs(" kB");
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}
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static void menu_led(char enled) {
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if (enled) { gwcputsxy(1, 15, "LED enabled. Press [L] to disable LED."); }
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else { gwcputsxy(1, 15, "LED disabled. Press [L] to enable LED."); }
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}
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static void loading_screen()
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{
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clrscr(); // Clear screen
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@@ -151,35 +48,56 @@ static void loading_screen()
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int ram2gs_main(void)
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{
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char hasled = true;
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char typecode = false;
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char enled = false;
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char type;
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uint16_t bankcount;
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char en8meg = true;
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char hasled = true;
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char enled = false;
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char nvm = false;
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int reset_count = false;
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int reset_count = 0;
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loading_screen();
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if (ram2gs_detect(0x00)) {
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typecode = 0x00;
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if (ram2gs_detect(0x00)) { // Altera MAX II / V
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type = 0x00;
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hasled = !ram2gs_detect(0x04);
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} else if (ram2gs_detect(0x04)) {
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typecode = 0x04;
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} else if (ram2gs_detect(0x04)) { // Lattice MachXO / iCE40 / AGM AG256
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type = 0x04;
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hasled = true;
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} else if (ram2gs_detect(0x08)) { // Lattice MachXO2
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type = 0x08;
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hasled = true;
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} else {
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#ifndef SKIP_RAM2GS_DETECT
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// If no RAM2GS, show an error message and quit
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gwcputsxy(0, 8, " No RAM2GS II detected.");
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gwcputsxy(0, 8, " No RAM2GS II detected.");
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gwcputsxy(0, 10, " Press any key to quit.");
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cgetc(); // Wait for key
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clrscr(); // Clear screen before quitting
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return EXIT_SUCCESS;
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#else
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hasled = true;
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#endif
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}
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if (hasled) { enled = !ram2gs_detect(typecode | 0x02); }
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// Set chip type
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ram2gs_hal_set_type(type);
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// Print menu
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menu();
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if (hasled) { menu_led(enled); }
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// Detect and print current capacity
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bankcount = ram2gs_getsize();
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menu_size(bankcount);
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// Detect and print LED menu
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#ifndef SKIP_RAM2GS_DETECT
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if (hasled) {
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enled = !ram2gs_detect(type | 0x02);
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menu_led(enled);
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}
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#endif
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// Get user choice from menu
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while (true) {
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@@ -194,7 +112,15 @@ int ram2gs_main(void)
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case 'L': {
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enled = !enled;
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ram2gs_set(en8meg, enled);
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if (hasled) { menu_led(enled); };
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if (hasled) {
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menu_led(enled);
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if (enled) {
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wait(1);
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ram2gs_flashled(10);
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wait(10);
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ram2gs_flashled(10);
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}
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};
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continue;
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} case 'R': {
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reset_count++;
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@@ -204,7 +130,7 @@ int ram2gs_main(void)
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gwcputsxy(1, 8, "Resetting RAM2GS settings.");
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gwcputsxy(1, 9, "Do not turn off your Apple.");
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ram2gs_erase(typecode); // Erase RAM2GS settings memory
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ram2gs_erase(); // Erase RAM2GS settings memory
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ram2gs_set(1, 0); // Enable 8 megabytes and disable LED
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// Wait for >= 500ms on even the fastest systems.
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@@ -233,9 +159,11 @@ int ram2gs_main(void)
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gwcputsxy(1, 8, "Saving RAM2GS capacity setting.");
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gwcputsxy(1, 9, "Do not turn off your Apple.");
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// Save capacity in nonvolatile memory.
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ram2gs_set_nvm(typecode, en8meg, enled);
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ram2gs_save_start(en8meg, enled);
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// Wait for >= 500ms on even the fastest systems.
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spin(33, 8);
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// Finish saving
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ram2gs_save_end(en8meg, enled);
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// Print success message
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clrscr(); // Clear screen
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gwcputsxy(1, 8, "RAM2GS capacity saved successfully.");
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