[Tester needed] - Fixed VHD support in Initiator mode by erichelgeson · Pull Request #335 · BlueSCSI/BlueSCSI-v2

erichelgeson · 2026-02-24T00:46:41Z

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[SCSI]
InitiatorVHD=1

Adds 512 byte footer to imaged file, eg:

SCSI ID 2 capacity 166200 sectors x 512 bytes
Drive total size is 81 MiB
SCSI Version 2
[SCSI2]
  Vendor = "QUANTUM "
  Product = "CTS80S          "
  Version = "4.07"
  Type = 0
VHD output enabled for SCSI ID 2
Starting to copy drive data to HD20_imaged.vhd

$ tail -c 512 HD20_imaged.vhd| hexdump -C
00000000  63 6f 6e 65 63 74 69 78  00 00 00 02 00 01 00 00  |conectix........|
00000010  ff ff ff ff ff ff ff ff  00 00 00 00 62 73 63 69  |............bsci|
00000020  00 01 00 00 57 69 32 6b  00 00 00 00 05 12 70 00  |....Wi2k......p.|
00000030  00 00 00 00 05 12 70 00  03 d1 0a 11 00 00 00 02  |......p.........|
00000040  ff ff e7 72 89 85 23 72  e0 63 7d 4a cc 5f f7 82  |...r..#r.c}J._..|
00000050  88 25 ca 6f 00 00 00 00  00 00 00 00 00 00 00 00  |.%.o............|
00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000200

androda · 2026-02-24T15:04:53Z

The Ultra initiator mode fix looks fine. But I don't know anything about VHDs.

When InitiatorVHD=1 is set in bluescsi.ini, initiator mode saves disk images as Fixed VHD files instead of raw .hda. A 512-byte footer conforming to the Microsoft VHD Image Format Specification (Oct 2006) is appended after the raw disk data, making images directly mountable by Windows, QEMU, VirtualBox, and other tools.

github-actions · 2026-04-06T13:01:00Z

BlueSCSI Memory Report

Compared against release v2026.03.01

Memory Usage

Target	FLASH	RAM	SCRATCH_X	SCRATCH_Y
Pico_2_Audio_SPDIF	673.4 KB (+53.4 KB) [33%]	511.7 KB [100%]	3.5 KB [88%]	3.8 KB (+1.0 KB) [94%]
Pico_2_DaynaPORT	665.8 KB (+52.4 KB) [33%]	511.7 KB [100%]	3.5 KB [88%]	3.0 KB (+1.0 KB) [75%]
Pico_Audio_SPDIF	694.6 KB (+60.8 KB) [34%]	252.2 KB (+6.7 KB) [99%]	1.5 KB [38%]	768 B [19%]
Pico_DaynaPORT	686.4 KB (+60.3 KB) [34%]	245.8 KB (+15.6 KB) [96%]	1.5 KB [38%]	—
Ultra	682.5 KB (+57.5 KB) [33%]	511.7 KB [100%]	3.5 KB [88%]	3.0 KB (+1.0 KB) [75%]
Ultra_Wide	442.4 KB (+61.6 KB) [22%]	511.7 KB [100%]	2.0 KB [50%]	3.0 KB (+1.0 KB) [75%]

Symbol Region Changes

Pico_2_Audio_SPDIF: 3 symbols moved FLASH → RAM (+12 B)

Symbol	Size
`operator delete(void*, unsigned int)`	4 B
`operator new[](unsigned int)`	4 B
`operator delete[](void*)`	4 B

Pico_2_Audio_SPDIF: 9 symbols moved RAM → FLASH (-298 B RAM)

Symbol	Size
`tud_descriptor_device_cb`	116 B
`tud_descriptor_string_cb`	96 B
`_fstat`	16 B
`_lseek`	16 B
`_close`	16 B
`_isatty`	16 B
`tud_descriptor_configuration_cb`	12 B
`_read`	6 B
`_write`	4 B

Pico_2_DaynaPORT: 3 symbols moved FLASH → RAM (+12 B)

Symbol	Size
`operator delete(void*, unsigned int)`	4 B
`operator new[](unsigned int)`	4 B
`operator delete[](void*)`	4 B

Pico_2_DaynaPORT: 9 symbols moved RAM → FLASH (-298 B RAM)

Symbol	Size
`tud_descriptor_device_cb`	116 B
`tud_descriptor_string_cb`	96 B
`_fstat`	16 B
`_lseek`	16 B
`_close`	16 B
`_isatty`	16 B
`tud_descriptor_configuration_cb`	12 B
`_read`	6 B
`_write`	4 B

Pico_Audio_SPDIF: 13 symbols moved FLASH → RAM (+2.0 KB)

Symbol	Size
`mscd_xfer_cb`	1.4 KB
`mscd_control_xfer_cb`	328 B
`tud_descriptor_string_cb`	116 B
`mscd_open`	104 B
`mscd_reset`	20 B
`mscd_init`	20 B
`tud_descriptor_configuration_cb`	8 B
`operator delete(void*, unsigned int)`	8 B
`operator new[](unsigned int)`	8 B
`tud_descriptor_device_cb`	8 B
`operator delete[](void*)`	8 B
`exit`	6 B
`SdSpiCard::errorCode() const`	4 B

Pico_Audio_SPDIF: 43 symbols moved RAM → FLASH (-5.3 KB RAM)

Symbol	Size
`amigaWifiCommand`	1.2 KB
`FatFile::rename(FatFile, char const)`	332 B
`FatPartition::init(FsBlockDeviceInterface*, unsigned char, unsigned long)`	324 B
`ExFatPartition::init(FsBlockDeviceInterface*, unsigned char, unsigned long)`	252 B
`ExFatFile::addDirCluster()`	196 B
`ExFatPartition::bitmapFind(unsigned long, unsigned long)`	192 B
`partitionTableGetVolumeStartSector(FsCache&, unsigned char)`	192 B
`ExFatPartition::bitmapModify(unsigned long, unsigned long, bool)`	164 B
`FatFile::makeUniqueSfn(FatLfn_t*)`	144 B
`ExFatFile::rename(ExFatFile, char const)`	140 B
`ExFatFile::preAllocate(unsigned long long)`	136 B
`ExFatPartition::freeClusterCount()`	136 B
`FatPartition::allocContiguous(unsigned long, unsigned long*)`	136 B
`FatPartition::freeClusterCount()`	124 B
`FatPartition::allocateCluster(unsigned long, unsigned long*)`	124 B
`FatFile::addDirCluster()`	112 B
`FatFile::fgets(char, int, char const)`	106 B
`FatFile::contiguousRange(unsigned long, unsigned long)`	106 B
`ExFatFile::fgets(char, int, char const)`	104 B
`FatPartition::fatPut(unsigned long, unsigned long)`	104 B
`FsBaseFile::copy(FsBaseFile const*)`	102 B
`ExFatPartition::fatPut(unsigned long, unsigned long)`	80 B
`ExFatPartition::freeChain(unsigned long)`	78 B
`ExFatFile::contiguousRange(unsigned long, unsigned long)`	76 B
`FatVolume::chdir(char const*)`	72 B
`FatFile::preAllocate(unsigned long)`	72 B
`ExFatVolume::chdir(char const*)`	68 B
`FatPartition::freeChain(unsigned long)`	58 B
`FatFile::getLfnChar(DirLfn_t const*, unsigned char)`	52 B
`ExFatFile::peek()`	50 B
... and 13 more

Pico_DaynaPORT: 34 symbols moved FLASH → RAM (+7.2 KB)

Symbol	Size
`mscd_xfer_cb`	1.4 KB
`ExFatFile::write(void const*, unsigned int)`	992 B
`ExFatFile::read(void*, unsigned int)`	672 B
`FatFile::write(void const*, unsigned int)`	524 B
`FatFile::readPrivate(void, unsigned int, DirFat_t*)`	498 B
`ExFatFile::seekSet(unsigned long long)`	468 B
`ExFatFile::buildSectorMap()`	444 B
`FatFile::buildSectorMap()`	358 B
`mscd_control_xfer_cb`	328 B
`FatFile::seekSet(unsigned long)`	272 B
`FatFile::readSectorsDirect(unsigned long, unsigned char*, unsigned long)`	200 B
`ExFatFile::readSectorsDirect(unsigned long, unsigned char*, unsigned long)`	200 B
`FatPartition::fatGet(unsigned long, unsigned long*)`	154 B
`tud_descriptor_string_cb`	116 B
`mscd_open`	104 B
`ExFatPartition::fatGet(unsigned long, unsigned long*)`	96 B
`FsCache::prepare(unsigned long, unsigned char)`	84 B
`ExFatPartition::dirSeek(DirPos_t*, unsigned long)`	80 B
`FsCache::sync()`	74 B
`ExFatPartition::dirCache(DirPos_t const*, unsigned char)`	68 B
`ExFatFile::dirCache(unsigned char, unsigned char)`	60 B
`FatFile::cacheDirEntry(unsigned char)`	32 B
`FatFile::readDirCache()`	32 B
`mscd_reset`	20 B
`mscd_init`	20 B
`FsBaseFile::operator=(FsBaseFile const&)`	12 B
`tud_descriptor_configuration_cb`	8 B
`operator delete(void*, unsigned int)`	8 B
`operator new[](unsigned int)`	8 B
`tud_descriptor_device_cb`	8 B
... and 4 more

Pico_DaynaPORT: 3 symbols moved RAM → FLASH (-1.2 KB RAM)

Symbol	Size
`amigaWifiCommand`	1.2 KB
`StreamFile<FsBaseFile, unsigned long long>::peek()`	34 B
`StreamFile<FatFile, unsigned long>::peek()`	10 B

Ultra: 4 symbols moved FLASH → RAM (+16 B)

Symbol	Size
`operator new(unsigned int)`	4 B
`operator delete[](void*)`	4 B
`operator new[](unsigned int)`	4 B
`operator delete(void*, unsigned int)`	4 B

Ultra: 9 symbols moved RAM → FLASH (-298 B RAM)

Symbol	Size
`tud_descriptor_device_cb`	116 B
`tud_descriptor_string_cb`	96 B
`_lseek`	16 B
`_close`	16 B
`_fstat`	16 B
`_isatty`	16 B
`tud_descriptor_configuration_cb`	12 B
`_read`	6 B
`_write`	4 B

Ultra_Wide: 4 symbols moved FLASH → RAM (+16 B)

Symbol	Size
`operator delete(void*, unsigned int)`	4 B
`operator new[](unsigned int)`	4 B
`operator delete[](void*)`	4 B
`operator new(unsigned int)`	4 B

Ultra_Wide: 9 symbols moved RAM → FLASH (-298 B RAM)

Symbol	Size
`tud_descriptor_device_cb`	116 B
`tud_descriptor_string_cb`	96 B
`_fstat`	16 B
`_lseek`	16 B
`_close`	16 B
`_isatty`	16 B
`tud_descriptor_configuration_cb`	12 B
`_read`	6 B
`_write`	4 B

erichelgeson changed the title ~~Fixed VHD support in Initiator mode~~ [Tester needed] - Fixed VHD support in Initiator mode Mar 1, 2026

erichelgeson force-pushed the eric/initiator/fixed-vhd branch from e77a8db to 0b70b73 Compare April 5, 2026 14:25

erichelgeson and others added 3 commits April 6, 2026 07:51

Ultra: Fix issue with initiator mode on some drives

2007324

build: Fix build after rebase on cmake.

ae0041d

erichelgeson force-pushed the eric/initiator/fixed-vhd branch from 5f2cb57 to ae0041d Compare April 6, 2026 12:54

erichelgeson merged commit ab0d756 into main Apr 6, 2026
1 check passed

erichelgeson deleted the eric/initiator/fixed-vhd branch April 6, 2026 13:02

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[Tester needed] - Fixed VHD support in Initiator mode#335

[Tester needed] - Fixed VHD support in Initiator mode#335
erichelgeson merged 3 commits intomainfrom
eric/initiator/fixed-vhd

erichelgeson commented Feb 24, 2026

Uh oh!

androda commented Feb 24, 2026

Uh oh!

github-actions bot commented Apr 6, 2026

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erichelgeson commented Feb 24, 2026

Uh oh!

androda commented Feb 24, 2026

Uh oh!

github-actions bot commented Apr 6, 2026

BlueSCSI Memory Report

Memory Usage

Symbol Region Changes

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