Changeset 476 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src
- Timestamp:
- Oct 13, 2012, 4:14:58 PM (12 years ago)
- google:author:
- aitotat@gmail.com
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm
r475 r476 117 117 jc SHORT ReturnWithMemoryIOtransferErrorInAH 118 118 119 ; Increment number of successfully read sectors 119 ; Update number of successfully read sectors and sectors left to transfer. 120 ; We cannot use SUB instruction as a comparison since it will not 121 ; work in this situation: 122 ; Before SUB we have 2 full blocks left to transfer. SUB command 123 ; then compares 2 full blocks against one full block and updates 124 ; sectors left to one full block and jumps to .ReadNextBlockFromDrive, 125 ; since we have one full block left to transfer. After it has been 126 ; transferred, there will be a wait for next block but DRQ is never 127 ; set since all is transferred! Then we get timeout error. 120 128 mov cx, [bp+MEMPIOVARS.wSectorsInBlock] 129 sub [bp+MEMPIOVARS.bSectorsLeft], cl 121 130 add [bp+MEMPIOVARS.bSectorsDone], cl 122 sub[bp+MEMPIOVARS.bSectorsLeft], cl131 cmp [bp+MEMPIOVARS.bSectorsLeft], cl 123 132 ja SHORT .ReadNextBlockFromDrive 124 133 … … 191 200 ; Increment number of successfully written WORDs 192 201 mov cx, [bp+MEMPIOVARS.wSectorsInBlock] 202 sub [bp+MEMPIOVARS.bSectorsLeft], cl 193 203 add [bp+MEMPIOVARS.bSectorsDone], cl 194 sub[bp+MEMPIOVARS.bSectorsLeft], cl204 cmp [bp+MEMPIOVARS.bSectorsLeft], cl 195 205 ja SHORT .WriteNextBlockToDrive 196 206
Note:
See TracChangeset
for help on using the changeset viewer.