[erichelgeson]

Some easy wins for saving some RAM.

Backed out nano lib as it changed memset/family to a much more inefficient mode.

[github-actions]

Test this PR

Flash the firmware built from e6bed32: BlueSCSI binaries.zip

• see Updating Firmware for how to flash it.

_{Must be signed in to GitHub. Build expires after 90 days.}

BlueSCSI Memory Report

Compared against release v2026.08.17

Memory Usage

Target	FLASH	RAM	SCRATCH_X	SCRATCH_Y
Pico_2_Audio_SPDIF	645.2 KB (-40.4 KB) [32%]	511.7 KB [100%]	3.5 KB [88%]	3.8 KB [94%]
Pico_2_DaynaPORT	637.4 KB (-40.5 KB) [31%]	511.7 KB [100%]	3.5 KB [88%]	3.0 KB [75%]
Pico_Audio_SPDIF	666.8 KB (-41.6 KB) [33%]	234.2 KB (-18.3 KB) [91%]	1.5 KB [38%]	768 B [19%]
Pico_DaynaPORT	658.6 KB (-41.7 KB) [32%]	228.1 KB (-18.1 KB) [89%]	1.5 KB [38%]	—
Ultra	654.8 KB (-40.6 KB) [32%]	511.7 KB [100%]	3.5 KB [88%]	3.0 KB [75%]
Ultra_Wide	413.2 KB (-40.9 KB) [20%]	511.7 KB [100%]	2.0 KB [50%]	3.0 KB [75%]

Symbol Region Changes

Pico_Audio_SPDIF: 120 symbols moved RAM → FLASH (-16.9 KB RAM)

Symbol	Size
mscd_xfer_cb	1.4 KB
scsi_accel_log_state()	1.2 KB
scsiDiskHandleVerify(unsigned long long, unsigned long, bool)	1.2 KB
platform_network_init	760 B
image_config_t::get_capacity_lba()	592 B
bluescsi_msc_loop()	480 B
onGetFile10(char*)	476 B
checkIs2023a	412 B
get_file_from_index(unsigned char, char const*, bool)	356 B
mscd_control_xfer_cb	328 B
platform_sense_msc()	300 B
scsiByteAddress	292 B
scsiDiskCheckDir(char*, int, image_config_t*, S2S_CFG_TYPE, char const*)	284 B
init_eject_button() [clone .part.0]	280 B
tud_rhport_init	244 B
s2s_doReserveRelease	232 B
readIniIntRange(char const*, char const*, long, long, long, long*)	224 B
scsiSaveByteAddress	220 B
platform_msc_lock_set(bool)	212 B
stdio_put_string	208 B
calculate_sync_period_limit	208 B
platform_setup_sd	208 B
stdio_out_chars_crlf	184 B
proc_read10_cmd.constprop.0	184 B
uart_set_baudrate	180 B
doSeek(unsigned long)	180 B
cdromCloseTray(image_config_t&)	168 B
cdromReinsertFirstImage(image_config_t&)	164 B
add_program_at_offset	164 B
irq_add_tail_to_free_list	164 B
... and 90 more

Pico_DaynaPORT: 118 symbols moved RAM → FLASH (-16.9 KB RAM)

Symbol	Size
mscd_xfer_cb	1.4 KB
scsi_accel_log_state()	1.2 KB
scsiDiskHandleVerify(unsigned long long, unsigned long, bool)	1.2 KB
platform_network_init	760 B
image_config_t::get_capacity_lba()	592 B
checkIs2023a	516 B
bluescsi_msc_loop()	480 B
onGetFile10(char*)	476 B
get_file_from_index(unsigned char, char const*, bool)	356 B
mscd_control_xfer_cb	328 B
platform_sense_msc()	300 B
scsiByteAddress	292 B
scsiDiskCheckDir(char*, int, image_config_t*, S2S_CFG_TYPE, char const*)	284 B
init_eject_button() [clone .part.0]	280 B
tud_rhport_init	244 B
s2s_doReserveRelease	232 B
readIniIntRange(char const*, char const*, long, long, long, long*)	224 B
scsiSaveByteAddress	220 B
platform_msc_lock_set(bool)	212 B
stdio_put_string	208 B
calculate_sync_period_limit	208 B
platform_setup_sd	208 B
stdio_out_chars_crlf	184 B
proc_read10_cmd.constprop.0	184 B
uart_set_baudrate	180 B
cdromCloseTray(image_config_t&)	168 B
cdromReinsertFirstImage(image_config_t&)	164 B
add_program_at_offset	164 B
irq_add_tail_to_free_list	164 B
scsiReadBuffer	160 B
... and 88 more