From b1d67364b4b4832b8efed112f7b0ead1a0b3cd3b Mon Sep 17 00:00:00 2001 From: Kimplul Date: Sun, 22 Sep 2024 22:45:18 +0300 Subject: start experimenting with processor grids --- tests/simple_grid/test.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 tests/simple_grid/test.c (limited to 'tests/simple_grid/test.c') diff --git a/tests/simple_grid/test.c b/tests/simple_grid/test.c new file mode 100644 index 0000000..782062d --- /dev/null +++ b/tests/simple_grid/test.c @@ -0,0 +1,43 @@ +#define X 64 +#define Y 64 + +void _start(unsigned char x, unsigned char y) +{ + volatile unsigned long *counter = (unsigned long *)4096; + volatile char *uart = (char *)8192; + + /* very hacky, not recommended but good enough for testing */ + if (x == 0 && y == 0) + *counter = 0; + else + while (*counter != ((x << 8) | y)) + ; + + *uart = '('; + /* [0 - 63] as two octal numbers */ + *uart = ((x >> 3) & 0x7) + '0'; + *uart = ((x >> 0) & 0x7) + '0'; + + *uart = ','; + *uart = ' '; + + *uart = ((y >> 3) & 0x7) + '0'; + *uart = ((y >> 0) & 0x7) + '0'; + + *uart = ')'; + *uart = '\n'; + + if (y == 63) { + x++; + y = 0; + } + else + y++; + + *counter = (x << 8) | y; + + while (*counter != (64 << 8)) + ; + + asm ("ebreak\n"); +} -- cgit v1.3