diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c index 9a4a7328f9..e5343348d0 100644 --- a/hw/m68k/next-cube.c +++ b/hw/m68k/next-cube.c @@ -60,6 +60,15 @@ typedef struct next_dma { uint32_t size; } next_dma; +typedef struct NextRtc { + uint8_t ram[32]; + uint8_t command; + uint8_t value; + uint8_t status; + uint8_t control; + uint8_t retval; +} NextRtc; + typedef struct { MachineState parent; @@ -77,7 +86,7 @@ typedef struct { uint32_t scr1; uint32_t scr2; - uint8_t rtc_ram[32]; + NextRtc rtc; } NeXTState; /* Thanks to NeXT forums for this */ @@ -105,11 +114,8 @@ static void nextscr2_write(NeXTState *s, uint32_t val, int size) static int led; static int phase; static uint8_t old_scr2; - static uint8_t rtc_command; - static uint8_t rtc_value; - static uint8_t rtc_status = 0x90; - static uint8_t rtc_return; uint8_t scr2_2; + NextRtc *rtc = &s->rtc; if (size == 4) { scr2_2 = (val >> 8) & 0xFF; @@ -135,52 +141,52 @@ static void nextscr2_write(NeXTState *s, uint32_t val, int size) if (((old_scr2 & SCR2_RTCLK) != (scr2_2 & SCR2_RTCLK)) && ((scr2_2 & SCR2_RTCLK) == 0)) { if (phase < 8) { - rtc_command = (rtc_command << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->command = (rtc->command << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); } if (phase >= 8 && phase < 16) { - rtc_value = (rtc_value << 1) | ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->value = (rtc->value << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); /* if we read RAM register, output RT_DATA bit */ - if (rtc_command <= 0x1F) { + if (rtc->command <= 0x1F) { scr2_2 = scr2_2 & (~SCR2_RTDATA); - if (s->rtc_ram[rtc_command] & (0x80 >> (phase - 8))) { + if (rtc->ram[rtc->command] & (0x80 >> (phase - 8))) { scr2_2 |= SCR2_RTDATA; } - rtc_return = (rtc_return << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->retval = (rtc->retval << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); } /* read the status 0x30 */ - if (rtc_command == 0x30) { + if (rtc->command == 0x30) { scr2_2 = scr2_2 & (~SCR2_RTDATA); /* for now status = 0x98 (new rtc + FTU) */ - if (rtc_status & (0x80 >> (phase - 8))) { + if (rtc->status & (0x80 >> (phase - 8))) { scr2_2 |= SCR2_RTDATA; } - rtc_return = (rtc_return << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->retval = (rtc->retval << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); } /* read the status 0x31 */ - if (rtc_command == 0x31) { + if (rtc->command == 0x31) { scr2_2 = scr2_2 & (~SCR2_RTDATA); - /* for now 0x00 */ - if (0x00 & (0x80 >> (phase - 8))) { + if (rtc->control & (0x80 >> (phase - 8))) { scr2_2 |= SCR2_RTDATA; } - rtc_return = (rtc_return << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->retval = (rtc->retval << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); } - if ((rtc_command >= 0x20) && (rtc_command <= 0x2F)) { + if ((rtc->command >= 0x20) && (rtc->command <= 0x2F)) { scr2_2 = scr2_2 & (~SCR2_RTDATA); /* for now 0x00 */ time_t time_h = time(NULL); struct tm *info = localtime(&time_h); int ret = 0; - switch (rtc_command) { + switch (rtc->command) { case 0x20: ret = SCR2_TOBCD(info->tm_sec); break; @@ -205,22 +211,22 @@ static void nextscr2_write(NeXTState *s, uint32_t val, int size) if (ret & (0x80 >> (phase - 8))) { scr2_2 |= SCR2_RTDATA; } - rtc_return = (rtc_return << 1) | - ((scr2_2 & SCR2_RTDATA) ? 1 : 0); + rtc->retval = (rtc->retval << 1) | + ((scr2_2 & SCR2_RTDATA) ? 1 : 0); } } phase++; if (phase == 16) { - if (rtc_command >= 0x80 && rtc_command <= 0x9F) { - s->rtc_ram[rtc_command - 0x80] = rtc_value; + if (rtc->command >= 0x80 && rtc->command <= 0x9F) { + rtc->ram[rtc->command - 0x80] = rtc->value; } /* write to x30 register */ - if (rtc_command == 0xB1) { + if (rtc->command == 0xB1) { /* clear FTU */ - if (rtc_value & 0x04) { - rtc_status = rtc_status & (~0x18); + if (rtc->value & 0x04) { + rtc->status = rtc->status & (~0x18); s->int_status = s->int_status & (~0x04); } } @@ -229,8 +235,8 @@ static void nextscr2_write(NeXTState *s, uint32_t val, int size) } else { /* else end or abort */ phase = -1; - rtc_command = 0; - rtc_value = 0; + rtc->command = 0; + rtc->value = 0; } s->scr2 = val & 0xFFFF00FF; s->scr2 |= scr2_2 << 8; @@ -881,9 +887,10 @@ static void next_cube_init(MachineState *machine) /* 0x0000XX00 << vital bits */ ns->scr1 = 0x00011102; ns->scr2 = 0x00ff0c80; + ns->rtc.status = 0x90; /* Load RTC RAM - TODO: provide possibility to load contents from file */ - memcpy(ns->rtc_ram, rtc_ram2, 32); + memcpy(ns->rtc.ram, rtc_ram2, 32); /* 64MB RAM starting at 0x04000000 */ memory_region_allocate_system_memory(ram, NULL, "next.ram", ram_size);