FreeCalypso > hg > freecalypso-tools
diff target-utils/pln-ppb-test/erase.c @ 990:f34261bb3355
pln-ppb-test: implement PPB erase
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 03 Dec 2023 00:20:14 +0000 |
parents | target-utils/pln-ppb-test/program.c@a5bff8104b45 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/target-utils/pln-ppb-test/erase.c Sun Dec 03 00:20:14 2023 +0000 @@ -0,0 +1,33 @@ +/* + * erase command for PPB special mode + */ + +#include <sys/types.h> +#include "types.h" + +void +cmd_erase(argbulk) + char *argbulk; +{ + char *argv[2]; + u_long addr; + u16 buf[256]; + int i; + + if (parse_args(argbulk, 1, 1, argv, 0) < 0) + return; + if (parse_hexarg(argv[0], 8, &addr) < 0) { + printf("ERROR: argument must be a valid 32-bit hex address\n"); + return; + } + if (addr & 1) { + printf("ERROR: unaligned address\n"); + return; + } + *(volatile u16 *)addr = 0x80; + *(volatile u16 *)addr = 0x30; + for (i = 0; i < 256; i++) + buf[i] = *(volatile u16 *)addr; + for (i = 0; i < 256; i++) + printf("%04X%c", buf[i], (i & 15) == 15 ? '\n' : ' '); +}