From 06c9efa9a8df0247912f9d722649176dc963894b Mon Sep 17 00:00:00 2001
From: Alex <alexkorochinskiy@gmail.com>
Date: Thu, 3 Sep 2026 13:03:14 +0300
Subject: [PATCH] Remove raw SD driver diagnostics from zifi.asm

The in-progress standalone SD/FAT32 driver work was interfering with
ZiFi's own screen output (garbled text) and had grown too large to
keep iterating on inside the main client. Reverting zifi.asm to its
pre-diagnostic state; the SD driver experiments continue as a
separate standalone test program instead.
---
 _spg/ZIFI/zifi.spg | Bin 44544 -> 43520 bytes
 zifi.asm           | 791 ---------------------------------------------
 2 files changed, 791 deletions(-)

diff --git a/_spg/ZIFI/zifi.spg b/_spg/ZIFI/zifi.spg
index 02de339a1476631e0137bc17f4d0c5f5effba79d..1a82cd139a4a3c3f51fdac34fce4bf88c71905ae 100644
GIT binary patch
delta 6580
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diff --git a/zifi.asm b/zifi.asm
index 1a55369..b5e68f1 100644
--- a/zifi.asm
+++ b/zifi.asm
@@ -61,8 +61,6 @@ start
 		ld (#beff),hl
  		call gfx_init
 		call set_text_colors
-		call test_sd_raw	;DIAG: standalone SD read test, remove once verified
-		call test_sd_raw2	;DIAG: standalone SD FAT32 file read test, remove once verified
 		call load_ini
 	IF cable_zifi
 		call psb_start
@@ -3791,795 +3789,6 @@ parsed_link		ds #080
 modem_command		ds 256+128
 current_paging_url	ds 150
 
-;DIAG: standalone raw SD-card hardware test - bypasses WDFCVBI2 entirely,
-;DIAG: talks to the SD controller directly via ports CONF=#77/DATA=#57.
-;DIAG: Goal: verify our own init+read code can talk to the hardware at all,
-;DIAG: before writing more of a replacement driver. Reads LBA 0 and checks
-;DIAG: for the standard 55 AA boot-sector signature. Remove after testing.
-test_sd_raw
-		call set_Textpage
-		;DIAG: pre-fill the buffer with a recognizable marker before touching
-		;DIAG: the card at all -- if this marker survives a "successful" read,
-		;DIAG: the read loop isn't actually writing to sdraw_buf
-		ld hl,sdraw_buf
-		ld de,sdraw_buf+1
-		ld (hl),#ee
-		ld bc,511
-		ldir
-
-		ld a,%00000001
-		ld (sdraw_csl_val),a	;DIAG: interface 1 only -- interface 2 (#0B) hung
-					;DIAG: the whole machine on real hardware, do not retry it
-
-		di			;DIAG: off_int_dma alone didn't help -- try a real interrupt
-					;DIAG: mask, in case int_main pages away our resident slot
-					;DIAG: mid-read (not just an SPI timing issue)
-		call sdraw_init
-		or a
-		jp nz,test_sd_raw_noc
-
-		call sdraw_read0
-		or a
-		jp nz,test_sd_raw_rderr
-		;DIAG: keep DI held through the prints too now -- ei was previously
-		;DIAG: right here, leaving a window for int_main to run between the
-		;DIAG: read and the dump; test whether that window is the culprit
-
-		;DIAG: show the raw command handshake bytes -- R1 response after
-		;DIAG: CMD18, and the token byte WTDO settled on (should be #FE)
-		ld a,(sdraw_last_r1)
-		ld de,sdraw_hexbuf3
-		call sdraw_hexch_pair
-		ld a,(sdraw_last_token)
-		ld de,sdraw_hexbuf3+2
-		call sdraw_hexch_pair
-		xor a
-		ld (sdraw_hexbuf3+4),a
-		ld (sdraw_hexbuf3+5),a
-		ld hl,sdraw_r1tok_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_hexbuf3
-		ld b,1
-		call zifi_echo
-
-		;DIAG: always dump [0..15] and [508..511] before judging the signature,
-		;DIAG: so a mismatch shows real vs. garbage/shifted bytes instead of guessing
-		ld hl,sdraw_buf
-		ld de,sdraw_hexbuf
-		ld b,16
-		call sdraw_hexdump
-		ld hl,sdraw_head_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_hexbuf
-		ld b,1
-		call zifi_echo
-
-		ld hl,sdraw_buf+508
-		ld de,sdraw_hexbuf2
-		ld b,4
-		call sdraw_hexdump
-		ld hl,sdraw_tail_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_hexbuf2
-		ld b,1
-		call zifi_echo
-
-		;DIAG: read LBA0 again, right now, and dump it too -- same bytes as
-		;DIAG: above would mean a deterministic bug in our code, not a flaky card
-		call sdraw_read0
-		or a
-		jr nz,test_sd_raw_rderr
-		ld hl,sdraw_buf
-		ld de,sdraw_hexbuf
-		ld b,16
-		call sdraw_hexdump
-		ld hl,sdraw_head2_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_hexbuf
-		ld b,1
-		call zifi_echo
-
-		ld hl,sdraw_buf+510
-		ld a,(hl)
-		cp #55
-		jr nz,test_sd_raw_sigerr
-		inc hl
-		ld a,(hl)
-		cp #aa
-		jr nz,test_sd_raw_sigerr
-
-		;DIAG: now read a totally different LBA (1000, not 0) -- does the
-		;DIAG: garbage pattern shift/change, or stay pinned to the same values?
-		ld hl,0
-		ld de,1000
-		call sdraw_readlba
-		or a
-		jr nz,test_sd_raw_rderr
-		ld hl,sdraw_buf
-		ld de,sdraw_hexbuf
-		ld b,16
-		call sdraw_hexdump
-		ld hl,sdraw_lba1000_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_hexbuf
-		ld b,1
-		call zifi_echo
-
-		ei			;DIAG: only now, after every print, re-enable interrupts
-		ld hl,sdraw_ok_msg
-		ld b,1
-		call zifi_echo
-		ret
-
-test_sd_raw_noc
-		ei
-		ld hl,sdraw_noc_msg
-		ld b,1
-		call zifi_echo
-		ret
-test_sd_raw_rderr
-		ei
-		ld hl,sdraw_rderr_msg
-		ld b,1
-		call zifi_echo
-		ret
-test_sd_raw_sigerr
-		ei
-		ld hl,sdraw_sigerr_msg
-		ld b,1
-		call zifi_echo
-		ret
-
-sdraw_noc_msg		db 'SD raw test: FAIL, no card found',0,0
-sdraw_rderr_msg		db 'SD raw test: FAIL, read error',0,0
-sdraw_sigerr_msg	db 'SD raw test: no 55 AA signature (see above)',0,0
-sdraw_ok_msg		db 'SD raw test: OK, signature valid',0,0
-sdraw_head_msg		db 'sector0[0..15]=',0,0
-sdraw_head2_msg		db '2nd read[0..15]=',0,0
-sdraw_lba1000_msg	db 'LBA1000[0..15]=',0,0
-sdraw_tail_msg		db 'sector0[508..511]=',0,0
-sdraw_r1tok_msg		db 'R1,token=',0,0
-sdraw_iface_msg		db 'interface CS_ON=',0,0
-sdraw_hexbuf		ds 40
-sdraw_hexbuf2		ds 16
-sdraw_hexbuf3		ds 8
-sdraw_last_r1		ds 1
-sdraw_last_token	ds 1
-
-sdraw_CONF	equ #77
-sdraw_DATA	equ #57
-
-;--- convert A into 2 hex ASCII chars at (DE) ---
-sdraw_hexch_pair
-		push af
-		rra
-		rra
-		rra
-		rra
-		call sdraw_hexch
-		ld (de),a
-		inc de
-		pop af
-		call sdraw_hexch
-		ld (de),a
-		ret
-
-;--- hex dump helper: HL=src, DE=dest ascii buffer, B=byte count ---
-sdraw_hexdump
-		ld a,(hl)
-		push af
-		rra
-		rra
-		rra
-		rra
-		call sdraw_hexch
-		ld (de),a
-		inc de
-		pop af
-		call sdraw_hexch
-		ld (de),a
-		inc de
-		inc hl
-		djnz sdraw_hexdump
-		xor a
-		ld (de),a
-		inc de
-		ld (de),a
-		ret
-
-sdraw_hexch
-		and #0f
-		cp 10
-		jr c,1f
-		add a,7
-1		add a,'0'
-		ret
-
-;--- low-level SD-over-SPI primitives, ported from source/DSDZC.ASM (Wild
-;--- Commander Improved) which targets the same ZX Evolution SD controller.
-sdraw_csh
-		push bc
-		push af
-		ld bc,sdraw_CONF
-		ld a,%00000011
-		out (c),a
-		ld bc,sdraw_DATA
-		ld a,#ff
-		out (c),a
-		pop af
-		pop bc
-		ret
-
-sdraw_csl_val	db %00000001		;DIAG: interface 1 by default; test_sd_raw
-					;DIAG: flips this to %00001011 (interface 2)
-					;DIAG: if interface 1's signature check fails
-sdraw_csl
-		push bc
-		push af
-		ld bc,sdraw_CONF
-		ld a,(sdraw_csl_val)
-		out (c),a
-		ld bc,sdraw_DATA
-		ld a,#ff
-		out (c),a
-		pop af
-		pop bc
-		jp sdraw_wait
-
-sdraw_wait
-		push bc
-		push af
-		ld bc,sdraw_DATA
-		ld de,60000
-1		in a,(c)
-		inc a
-		jr z,2f
-		dec de
-		ld a,d
-		or e
-		jr nz,1b
-2		pop af
-		pop bc
-		ret
-
-sdraw_wtdo
-		push bc
-		push de
-		ld bc,sdraw_DATA
-		ld de,60000
-1		in a,(c)
-		cp #ff
-		jr nz,2f
-		dec de
-		ld a,d
-		or e
-		jr nz,1b
-2		pop de
-		pop bc
-		ret
-
-sdraw_resp
-		push de
-		push bc
-		ld bc,sdraw_DATA
-		ld d,10
-1		in a,(c)
-		bit 7,a
-		jr z,2f
-		dec d
-		jr nz,1b
-		inc d
-2		pop bc
-		pop de
-		ret
-
-sdraw_cycl	; DE = number of #FF clock bytes to send
-		ld bc,sdraw_DATA
-1		ld a,#ff
-		out (c),a
-		dec de
-		ld a,d
-		or e
-		jr nz,1b
-		ret
-
-;--- send a pre-built 6-byte command frame pointed to by HL (real CRC).
-;--- Matches D:\ST\ZP\PLAY60.ASM's actual shipped timing (not the blog
-;--- article, which the article's own author -- who wrote that player --
-;--- says has bugs): two dummy IN (C) reads before the frame ("; savelij"
-;--- in the source), and a NOP between each byte sent. Without this, the
-;--- handshake (R1/token) still looks valid but the payload comes back as
-;--- deterministic garbage -- exactly what we were seeing.
-sdraw_cmd
-		call sdraw_csh
-		call sdraw_csl
-		ld bc,sdraw_DATA
-		in (c)
-		in (c)
-		outi
-		nop
-		outi
-		nop
-		outi
-		nop
-		outi
-		nop
-		outi
-		nop
-		outi
-		jp sdraw_resp
-
-;--- send a simple command: A=opcode, all-zero args, CRC=#FF ---
-sdraw_cmdo
-		call sdraw_csh
-		call sdraw_csl
-sdraw_cmdx
-		ld bc,sdraw_DATA
-		in (c)
-		in (c)
-		out (c),a
-		xor a
-		out (c),a
-		nop
-		out (c),a
-		nop
-		out (c),a
-		nop
-		out (c),a
-		ld a,#ff
-		out (c),a
-		ret
-
-sdraw_cmd00	db %01000000+0,0,0,0,0,#95
-sdraw_cmd08	db %01000000+8,0,0,1,#aa,#87
-sdraw_cmd16	db %01000000+16,0,0,2,0,#ff
-
-sdraw_do_cmd0	ld hl,sdraw_cmd00
-		jp sdraw_cmd
-sdraw_do_cmd8	ld hl,sdraw_cmd08
-		jp sdraw_cmd
-sdraw_do_cmd16	ld hl,sdraw_cmd16
-		jp sdraw_cmd
-sdraw_do_cmd1	ld a,%01000000+1
-		call sdraw_cmdo
-		jp sdraw_resp
-sdraw_do_cmd55	ld a,%01000000+55
-		call sdraw_cmdo
-		jp sdraw_resp
-
-;--- ACMD41: H = argument high byte (0, or #40 for HCS), rest zero ---
-sdraw_do_acmd41
-		call sdraw_do_cmd55
-		call sdraw_csh
-		call sdraw_csl
-		ld bc,sdraw_DATA
-		in (c)
-		in (c)
-		ld a,%01000000+41
-		out (c),a
-		ld l,0
-		out (c),h
-		nop
-		out (c),l
-		nop
-		out (c),l
-		nop
-		out (c),l
-		dec l
-		out (c),l
-		jp sdraw_resp
-
-;--- card init: CMD0/CMD8/ACMD41 (SDv2), falls back to ACMD41/CMD1 (SDv1/MMC)
-;    A=0 on success, A=1 on failure
-sdraw_init
-		call sdraw_csh
-		ld de,512+10
-		call sdraw_cycl
-
-		ld de,8000
-1		dec de
-		ld a,d
-		or e
-		jp z,sdraw_init_fail
-		call sdraw_do_cmd0
-		jr nz,1b
-		dec a
-		jp nz,1b
-
-		call sdraw_do_cmd8
-		push af
-		ld bc,sdraw_DATA
-		in e,(c)
-		nop
-		in e,(c)
-		nop
-		in h,(c)
-		nop
-		in l,(c)
-		pop af
-		jr nz,1b
-		bit 2,a
-		jr z,sdraw_v2
-
-;--- legacy path: SDv1 (ACMD41) then MMC (CMD1) ---
-		ld de,8000
-2		dec de
-		ld a,d
-		or e
-		jr z,3f
-		ld h,0
-		call sdraw_do_acmd41
-		jr nz,2b
-		cp 1
-		jr z,2b
-		or a
-		jr nz,3f
-		jr sdraw_fbs
-
-3		ld de,8000
-4		dec de
-		ld a,d
-		or e
-		jr z,sdraw_init_fail
-		call sdraw_do_cmd1
-		jr nz,4b
-		cp 1
-		jr z,4b
-		or a
-		jr nz,sdraw_init_fail
-
-sdraw_fbs	call sdraw_do_cmd16
-		jr nz,sdraw_init_fail
-		or a
-		jr nz,sdraw_init_fail
-		jr sdraw_init_ok
-
-;--- SDv2 path: verify the 0x1AA echo pattern from CMD8, then ACMD41+HCS ---
-sdraw_v2	ld de,#01aa
-		or a
-		sbc hl,de
-		jr nz,sdraw_init_fail
-
-		ld de,8000
-5		dec de
-		ld a,d
-		or e
-		jr z,sdraw_init_fail
-		ld h,#40
-		call sdraw_do_acmd41
-		jr nz,5b
-		cp 1
-		jr z,5b
-		or a
-		jr nz,sdraw_init_fail
-		; not distinguishing byte/block addressing (CMD58/CCS) here --
-		; irrelevant for reading LBA 0, which is address 0 either way.
-
-sdraw_init_ok
-		call sdraw_csh
-		xor a
-		ret
-
-sdraw_init_fail
-		call sdraw_csh
-		xor a
-		inc a
-		ret
-
-;--- read LBA 0 (single 512-byte sector) into sdraw_buf ---
-;    A=0 on success, A=1 on failure
-sdraw_read0
-		ld hl,0
-		ld de,0
-		jp sdraw_readlba
-
-;--- read an arbitrary LBA (single 512-byte sector) via CMD18+CMD12 into
-;--- sdraw_buf. Matches the proven reference implementation in D:\ST\ZP's
-;--- Z-Player source (SD-CARD2.TXT / PLAY60.ASM) byte-for-byte in approach:
-;--- CMD18 (not CMD17!) for the read, and INI (not manual IN+LD(HL),A) for
-;--- the bulk 512-byte transfer.
-;    HL = LBA bits31-16, DE = LBA bits15-0
-;    A=0 on success, A=1 on failure
-sdraw_readlba
-		call sdraw_csh
-		call sdraw_csl
-		ld bc,sdraw_DATA
-		in (c)			;DIAG: settling reads + inter-byte NOPs, matching
-		in (c)			;DIAG: PLAY60.ASM's CMzz exactly (see sdraw_cmd)
-		ld a,%01000000+18
-		out (c),a
-		nop
-		out (c),h
-		nop
-		out (c),l
-		nop
-		out (c),d
-		nop
-		out (c),e
-		ld a,#ff
-		out (c),a
-		call sdraw_resp
-		ld (sdraw_last_r1),a	;DIAG: record for display, whatever the outcome
-		or a
-		jr nz,sdraw_readlba_fail
-
-		call sdraw_wtdo
-		ld (sdraw_last_token),a	;DIAG: record for display, whatever the outcome
-		cp #fe
-		jr nz,sdraw_readlba_fail
-
-		;DIAG: manual IN+store loop, reloading BC (so B is pinned at 0) before
-		;DIAG: every single byte -- ruling out B-register drift across INI's
-		;DIAG: as a hardware port-decode issue, however unlikely
-		ld hl,sdraw_buf
-		ld e,32
-1		ld b,16
-2		ld c,sdraw_DATA
-		in a,(c)
-		ld (hl),a
-		inc hl
-		djnz 2b
-		dec e
-		jr nz,1b
-
-		ld bc,sdraw_DATA
-		in a,(c)		; discard 2 CRC bytes
-		in a,(c)
-
-		call sdraw_do_cmd12
-		call sdraw_snb
-		call sdraw_wtby
-		call sdraw_csh
-		xor a
-		ret
-
-sdraw_readlba_fail
-		call sdraw_csh
-		xor a
-		inc a
-		ret
-
-;--- stop a multi-block transfer (CMD12). Sent without a fresh CSH/CSL --
-;--- the card is still selected from the CMD18 that started the transfer.
-sdraw_do_cmd12
-		ld bc,sdraw_DATA
-		ld a,%01000000+12
-		out (c),a
-		xor a
-		out (c),a
-		out (c),a
-		out (c),a
-		out (c),a
-		ld a,#ff
-		out (c),a
-		xor a
-		in a,(sdraw_DATA)	; one stuff byte before the R1 response, per spec
-		jp sdraw_resp
-
-sdraw_snb
-		push bc
-		ld b,16
-1		xor a
-		in a,(sdraw_DATA)
-		djnz 1b
-		pop bc
-		ret
-
-sdraw_wtby
-		push bc
-		ld bc,sdraw_DATA
-1		in a,(c)
-		or a
-		jr z,1b
-		pop bc
-		ret
-
-;DIAG: step 2 - parse the FAT32 BPB (already validated in sdraw_buf's first
-;DIAG: 16 bytes), locate the root directory, find ZIFI.INI's short-name
-;DIAG: entry there, and read+print its first line. Proves we can navigate
-;DIAG: the filesystem and read a real file, not just a raw sector.
-test_sd_raw2
-		di			;DIAG: real interrupt mask, see test_sd_raw
-		call sdraw_read0
-		or a
-		jp nz,t2_fail
-
-		ld a,(sdraw_buf+13)
-		ld (sdraw_secpclus),a
-
-		; acc(32-bit) = reservedSectors
-		ld hl,(sdraw_buf+14)
-		ld (sdraw_acc_lo),hl
-		ld hl,0
-		ld (sdraw_acc_hi),hl
-
-		; acc += FATSz32 * numFATs
-		ld hl,(sdraw_buf+36)
-		ld (sdraw_fatsz_lo),hl
-		ld hl,(sdraw_buf+38)
-		ld (sdraw_fatsz_hi),hl
-		ld a,(sdraw_buf+16)
-		ld b,a
-		or a
-		jr z,t2_fatdone
-t2_fatloop
-		push bc
-		ld hl,(sdraw_fatsz_lo)
-		ld de,(sdraw_fatsz_hi)
-		call sdraw_acc_add32
-		pop bc
-		djnz t2_fatloop
-t2_fatdone
-		; acc now = firstDataSector -- save it, needed again for the file itself
-		ld hl,(sdraw_acc_lo)
-		ld (sdraw_firstdata_lo),hl
-		ld hl,(sdraw_acc_hi)
-		ld (sdraw_firstdata_hi),hl
-
-		; acc += (rootCluster-2) * sectorsPerCluster
-		ld hl,(sdraw_buf+44)
-		ld de,2
-		or a
-		sbc hl,de
-		ld b,h
-		ld c,l
-t2_clusloop
-		ld a,b
-		or c
-		jr z,t2_clusdone
-		push bc
-		ld a,(sdraw_secpclus)
-		ld l,a
-		ld h,0
-		ld de,0
-		call sdraw_acc_add32
-		pop bc
-		dec bc
-		jr t2_clusloop
-t2_clusdone
-		ld hl,(sdraw_acc_hi)
-		ld de,(sdraw_acc_lo)
-		call sdraw_readlba
-		or a
-		jp nz,t2_fail
-
-		ld hl,sdraw_buf
-t2_scan
-		ld a,h
-		cp high (sdraw_buf+512)
-		jr nz,t2_chk
-		ld a,l
-		cp low (sdraw_buf+512)
-		jr z,t2_notfound
-t2_chk
-		push hl
-		ld de,sdraw_zifiini_name
-		ld b,11
-1		ld a,(de)
-		cp (hl)
-		jr nz,2f
-		inc hl
-		inc de
-		djnz 1b
-		pop hl
-		jr t2_found
-2		pop hl
-		ld de,32
-		add hl,de
-		jr t2_scan
-
-t2_found
-		; extract starting cluster: low word @ entry+26, high word @ entry+20
-		push hl
-		ld de,26
-		add hl,de
-		ld a,(hl)
-		inc hl
-		ld h,(hl)
-		ld l,a
-		ld (sdraw_filecl_lo),hl
-		pop hl
-		push hl
-		ld de,20
-		add hl,de
-		ld a,(hl)
-		inc hl
-		ld h,(hl)
-		ld l,a
-		ld (sdraw_filecl_hi),hl
-		pop hl
-
-		; acc = firstDataSector + (fileCluster-2)*sectorsPerCluster
-		ld hl,(sdraw_firstdata_lo)
-		ld (sdraw_acc_lo),hl
-		ld hl,(sdraw_firstdata_hi)
-		ld (sdraw_acc_hi),hl
-
-		ld hl,(sdraw_filecl_lo)
-		ld de,2
-		or a
-		sbc hl,de
-		ld b,h
-		ld c,l
-t2_fclusloop
-		ld a,b
-		or c
-		jr z,t2_fclusdone
-		push bc
-		ld a,(sdraw_secpclus)
-		ld l,a
-		ld h,0
-		ld de,0
-		call sdraw_acc_add32
-		pop bc
-		dec bc
-		jr t2_fclusloop
-t2_fclusdone
-		ld hl,(sdraw_acc_hi)
-		ld de,(sdraw_acc_lo)
-		call sdraw_readlba
-		or a
-		jr nz,t2_fail
-
-		ei
-		ld hl,sdraw_found_msg
-		ld b,1
-		call zifi_echo
-		ld hl,sdraw_buf
-		ld b,1
-		call zifi_echo
-		ret
-
-t2_notfound
-		ei
-		ld hl,sdraw_notfound_msg
-		ld b,1
-		call zifi_echo
-		ret
-t2_fail
-		ei
-		ld hl,sdraw_fail2_msg
-		ld b,1
-		call zifi_echo
-		ret
-
-; adds a 32-bit value (DE=high word, HL=low word) into the 32-bit
-; accumulator sdraw_acc_hi:sdraw_acc_lo
-sdraw_acc_add32
-		push de
-		ld de,(sdraw_acc_lo)
-		add hl,de
-		ld (sdraw_acc_lo),hl
-		pop hl
-		ld de,(sdraw_acc_hi)
-		adc hl,de
-		ld (sdraw_acc_hi),hl
-		ret
-
-sdraw_found_msg		db 'ZIFI.INI found, first line:',0,0
-sdraw_notfound_msg	db 'ZIFI.INI not found in root dir sector0',0,0
-sdraw_fail2_msg		db 'SD raw test2: FAIL',0,0
-sdraw_zifiini_name	db "ZIFI    INI"
-
-sdraw_secpclus		ds 1
-sdraw_acc_lo		ds 2
-sdraw_acc_hi		ds 2
-sdraw_fatsz_lo		ds 2
-sdraw_fatsz_hi		ds 2
-sdraw_firstdata_lo	ds 2
-sdraw_firstdata_hi	ds 2
-sdraw_filecl_lo		ds 2
-sdraw_filecl_hi		ds 2
-
-		align 256
-sdraw_buf	ds 512
-;DIAG: end of standalone raw SD-card test block
-
 sd_init
 		call init_sd_card