NeoFlock/neonucleus
2
0
Fork 0
mirror of https://github.com/NeoFlock/neonucleus.git synced 2025-09-24 09:03:32 +02:00
Code Issues Packages Projects Releases Wiki Activity

fix byte indexing for drives

Browse Source
This commit is contained in:
Speedy_Lex 2025-07-02 01:25:41 +02:00
parent 20fecebb90
commit 7c15adc305
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/components/drive.c
View File

@ -73,11 +73,10 @@ void nn_drive_writeSector(nn_drive *drive, void *_, nn_component *component, nn_
} }
} }
void nn_drive_readByte(nn_drive *drive, void *_, nn_component *component, nn_computer *computer) { void nn_drive_readByte(nn_drive *drive, void *_, nn_component *component, nn_computer *computer) {
// TODO: calculate the right index aaaaargh
nn_value offsetValue = nn_getArgument(computer, 0); nn_value offsetValue = nn_getArgument(computer, 0);
size_t disk_offset = nn_toInt(offsetValue); size_t disk_offset = nn_toInt(offsetValue) - 1;
size_t sector_size = drive->getSectorSize(component, drive->userdata); size_t sector_size = drive->getSectorSize(component, drive->userdata);
int sector = disk_offset / sector_size; int sector = (disk_offset / sector_size) + 1;
size_t sector_offset = disk_offset % sector_size; size_t sector_offset = disk_offset % sector_size;
char buf[sector_size]; char buf[sector_size];
@ -86,13 +85,12 @@ void nn_drive_readByte(nn_drive *drive, void *_, nn_component *component, nn_com
nn_return(computer, nn_values_integer(buf[sector_offset])); nn_return(computer, nn_values_integer(buf[sector_offset]));
} }
void nn_drive_writeByte(nn_drive *drive, void *_, nn_component *component, nn_computer *computer) { void nn_drive_writeByte(nn_drive *drive, void *_, nn_component *component, nn_computer *computer) {
// TODO: calculate the right index aaaaargh
nn_value offsetValue = nn_getArgument(computer, 0); nn_value offsetValue = nn_getArgument(computer, 0);
nn_value writeValue = nn_getArgument(computer, 1); nn_value writeValue = nn_getArgument(computer, 1);
size_t disk_offset = nn_toInt(offsetValue); size_t disk_offset = nn_toInt(offsetValue) - 1;
char write = nn_toInt(writeValue); char write = nn_toInt(writeValue);
size_t sector_size = drive->getSectorSize(component, drive->userdata); size_t sector_size = drive->getSectorSize(component, drive->userdata);
int sector = disk_offset / sector_size; int sector = (disk_offset / sector_size) + 1;
size_t sector_offset = disk_offset % sector_size; size_t sector_offset = disk_offset % sector_size;
char buf[sector_size]; char buf[sector_size];