forked from AbleOS/ableos
47 lines
897 B
Plaintext
47 lines
897 B
Plaintext
.{memory, buffer} := @use("../../../libraries/stn/src/lib.hb")
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serial_print := fn(ptr: ^u8): void {
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letter := @as(u8, 0)
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loop if *ptr == 0 break else {
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letter = *ptr
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memory.outb(0xF803, letter)
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ptr += 1
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}
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return
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}
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serial_println := fn(ptr: ^u8): void {
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serial_print(ptr)
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memory.outb(0xF803, 12)
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memory.outb(0xF803, 13)
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return
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}
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main := fn(): int {
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// This must be done first and foremost to prevent racing
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a := buffer.create("XNumber\0")
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serial_println("Starting Serial Driver.\0")
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mem := memory.request_page(1)
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loop {
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ptr := @as(^u8, @eca(4, a, mem, 0x1000))
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if ptr == 0 {
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serial_println("No message\0")
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}
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if ptr > 0 {
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serial_println("Yes message\0")
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serial_println(mem)
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break
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}
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}
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// Note that the first byte is reserved, pad accordingly.
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b := buffer.search("XNumber\0")
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if a == b {
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serial_println("Stopping Serial Driver.\0")
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}
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return 0
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} |