more powerful load-sectors
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96c217ab1c
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d771fb6bab
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@ -0,0 +1,43 @@
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fn load-sectors disk: (addr disk), lba: int, n: int, out: (addr stream byte) {
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var curr-lba/ebx: int <- copy lba
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var remaining/edx: int <- copy n
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{
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compare remaining, 0
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break-if-<=
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# sectors = min(remaining, 0x100)
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var sectors/eax: int <- copy remaining
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compare sectors, 0x100
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{
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break-if-<=
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sectors <- copy 0x100
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}
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#
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read-ata-disk disk, curr-lba, sectors, out
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#
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remaining <- subtract sectors
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curr-lba <- add sectors
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loop
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}
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}
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fn store-sectors disk: (addr disk), lba: int, n: int, in: (addr stream byte) {
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var curr-lba/ebx: int <- copy lba
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var remaining/edx: int <- copy n
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{
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compare remaining, 0
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break-if-<=
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# sectors = min(remaining, 0x100)
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var sectors/eax: int <- copy remaining
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compare sectors, 0x100
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{
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break-if-<=
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sectors <- copy 0x100
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}
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#
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write-ata-disk disk, curr-lba, sectors, in
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#
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remaining <- subtract sectors
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curr-lba <- add sectors
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loop
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}
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}
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@ -18,14 +18,14 @@
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fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk) {
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var text-storage: (stream byte 0x200)
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var text/esi: (addr stream byte) <- address text-storage
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read-ata-disk data-disk, 0/lba, 1/num-sectors, text
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load-sectors data-disk, 0/lba, 1/num-sectors, text
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var word-count/eax: int <- word-count text
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var result-storage: (stream byte 0x10)
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var result/edi: (addr stream byte) <- address result-storage
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write-int32-decimal result, word-count
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write-ata-disk data-disk, 0/lba, 1/num-sectors, result
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store-sectors data-disk, 0/lba, 1/num-sectors, result
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}
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fn word-count in: (addr stream byte) -> _/eax: int {
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17
apps/img.mu
17
apps/img.mu
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@ -36,22 +36,7 @@ fn load-image self: (addr image), data-disk: (addr disk) {
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var s/ebx: (addr stream byte) <- address s-storage
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, "loading sectors from data disk", 3/fg, 0/bg
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move-cursor-to-left-margin-of-next-line 0/screen
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read-ata-disk data-disk, 0/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x100/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x200/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x300/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x400/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x500/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x600/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x700/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x800/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0x900/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xa00/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xb00/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xc00/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xd00/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xe00/lba, 0x100/sectors, s
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read-ata-disk data-disk, 0xf00/lba, 0x100/sectors, s
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load-sectors data-disk, 0/lba, 0x1000/sectors, s
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, "parsing", 3/fg, 0/bg
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move-cursor-to-left-margin-of-next-line 0/screen
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initialize-image self, s
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