Httpd-ack: Difference between revisions

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Latest revision as of 22:28, 10 June 2020

Httpd-ack

Released by	ackmed (at) gotwalls.com
Name	httpd-ack
Genre	Tool, Utility
Release date	Jul 11, 2008

Download Httpd-ack (info)

httpd-ack is software written for the Dreamcast to dump GD-ROMs via a Broadband Adapter link.

Usage

Assign a static IP to your Broadband Adapter using a web browser like XDP or Broadband Passport.
Burn the CDI image to a disc and boot the Dreamcast. Alternatively, boot the Dreamcast using dcload-ip and load the elf file with dc-tool:

dc-tool -t <dreamcast ip> -n -x httpd-ack.elf

On a PC connected to the same network as the Dreamcast, load a web browser and enter the Dreamcast IP in the URL bar. A menu interface will appear that will allow you to dump tracks from the GD-ROM by clicking a track to "download" it via your browser. By modifying the parameters of the links given to each track, you can manipulate the dumping options:

Dumping Parameters
Option	Description
track%d	dump track %d (or end sector if >= 100)
session%d	dump session %d (or start sector if >= 100)
ipbintoc%s	1 = use cdrom TOC thats in IP.BIN for session 2 0 = use cdrom's TOC (this option is useful for dumping GD-Rs with swap trick)
p%d	unknown param when initializing the cdrom. 8192 and 4096 seem to be valid numbers. 8192 for data, 4096 for audio?
cdxa%d	something to do with cdxa. 0, 1024, 2048 seem to be valid numbers. 1024 for data, 0 for audio?
sector_size%d	what sector size to initial the cdrom with for reading. 2048 or 2352 are valid. 2352 doesnt always seem to stick and somehow depends on p and cdxa values.
gap%d	the end sector for tracks is unknown (except for the last track in a session). so the end sector is calculated by ((start sector of next track - 1) - gap%d).
dma%d	1 = use dma when transfering from cdrom 0 = use pio
sector_read%d	number of sectors to read in each cdrom_read_sectors() call, max 128
sub%d	0 = dont dump sub channel 1 = use syscall method to dump sub channel 2 = use cdrom_read_sectors method to dump sub channel (dma will be forced to 0, sector_read will be forced to 1)
abort%d	1 = abort on read error 0 = continue on read error
retry%d	if cdrom_read_sectors() call returns an error, the number of times to retry before giving up

Automating dumping

As only one track may be dumped at a time, and the user must sit at the web browser to start dumping the next track, it is recommended to use a script to automate the dumping process if a large number of GD-ROMs will be dumped. A script that can be run on Windows 10, macOS, or Linux is available.

GD-R dumping

It is possible to make httpd-ack use the TOC from the IP.BIN at sector 45000 for session 2. The ability to do this is to assist in making it possible to dump GD-R media using a swap disc method, as otherwise the TOC from the old disc would be used when swapping discs with the lid detection switch held down.

http://IP/?ipbintoc

http://IP/index.html?ipbintoc

The following entry will be logged to the video output to indicate the software is using the TOC from the IP.BIN:

get_toc(): using ip.bin for TOC

Dumping a sector range

track%d and session%d have a dual meaning. If both are >= 100, the value of session%d will act as the start sector, and track%d the end sector, and instead of returning an entire track for download, the software will return a file only containing the specific sector range (session%d through track%d).

Screenshots

Title screen

Source

gotwalls.com

Historical builds

Retrieved from "https://dreamcast.wiki/wiki/index.php?title=Httpd-ack&oldid=994"

@@ Line 6: / Line 6: @@
 |name=httpd-ack
 |genre=Tool, Utility
-|release_date= Jul 7, 2018
+|release_date= Jul 11, 2008
 |unreleased=No
 }}
@@ Line 12: / Line 12: @@
 |file=Httpd-ack-20080711.zip
 }}
-== Description ==
-'''Original Release Announcement'''
-dreamcast gd-rom dumper, requires bba
+'''httpd-ack''' is software written for the Dreamcast to dump GD-ROMs via a [[Broadband Adapter]] link.
 === Usage ===
-[https://www.gotwalls.com/files/httpd-ack.txt https://www.gotwalls.com/files/httpd-ack.txt]
+* Assign a static IP to your Broadband Adapter using a web browser like [[XDP]] or [[Broadband Passport]].
+* Burn the CDI image to a disc and boot the Dreamcast. Alternatively, boot the Dreamcast using [[dcload-ip]] and load the elf file with dc-tool:
+ dc-tool -t <dreamcast ip> -n -x httpd-ack.elf
+On a PC connected to the same network as the Dreamcast, load a web browser and enter the Dreamcast IP in the URL bar. A menu interface will appear that will allow you to dump tracks from the GD-ROM by clicking a track to "download" it via your browser. By modifying the parameters of the links given to each track, you can manipulate the dumping options:
+{| class="wikitable"
+|+Dumping Parameters
+|-
+! Option
+! Description
+|-
+|track%d
+|dump track %d (or end sector if >= 100)
+|-
+|session%d
+|dump session %d (or start sector if >= 100)
+|-
+|ipbintoc%s
+|1 = use cdrom TOC thats in IP.BIN for session 2<br />0 = use cdrom's TOC<br />(this option is useful for dumping GD-Rs with swap trick)
+|-
+|p%d
+|unknown param when initializing the cdrom.<br />8192 and 4096 seem to be valid numbers.  8192 for data, 4096 for audio?
+|-
+|cdxa%d
+|something to do with cdxa.<br />0, 1024, 2048 seem to be valid numbers.  1024 for data, 0 for audio?
+|-
+|sector_size%d
+|what sector size to initial the cdrom with for reading.<br />2048 or 2352 are valid.  2352 doesnt always seem to stick and somehow depends on p and cdxa values.
+|-
+|gap%d
+|the end sector for tracks is unknown (except for the last track in a session).<br />so the end sector is calculated by ((start sector of next track - 1) - gap%d).
+|-
+|dma%d
+|1 = use dma when transfering from cdrom<br />0 = use pio
+|-
+|sector_read%d
+|number of sectors to read in each cdrom_read_sectors() call, max 128
+|-
+|sub%d
+|0 = dont dump sub channel<br />1 = use syscall method to dump sub channel<br />2 = use cdrom_read_sectors method to dump sub channel (dma will be forced to 0, sector_read will be forced to 1)
+|-
+|abort%d
+| 1 = abort on read error<br />0 = continue on read error
+|-
+|retry%d
+|if cdrom_read_sectors() call returns an error, the number of times to retry before giving up
+|}
+== Automating dumping ==
+As only one track may be dumped at a time, and the user must sit at the web browser to start dumping the next track, it is recommended to use a script to automate the dumping process if a large number of GD-ROMs will be dumped. A script that can be run on Windows 10, macOS, or Linux is [https://dcemulation.org/dumpcast/viewtopic.php?f=2&t=1666 available].
+== GD-R dumping ==
+It is possible to make httpd-ack use the TOC from the IP.BIN at sector 45000 for session 2.  The ability to do this is to assist in making it possible to dump GD-R media using a [[Dumping GD-ROMs|swap disc method]], as otherwise the TOC from the old disc would be used when swapping discs with the lid detection switch held down.
+ http://IP/?ipbintoc
+or
+ http://IP/index.html?ipbintoc
+The following entry will be logged to the video output to indicate the software is using the TOC from the IP.BIN:
+ get_toc(): using ip.bin for TOC
+== Dumping a sector range ==
+track%d and session%d have a dual meaning. If both are >= 100, the value of session%d will act as the start sector, and track%d the end sector, and instead of returning an entire track for download, the software will return a file only containing the specific sector range (session%d through track%d).
 == Screenshots ==
 <gallery mode=nolines heights=168 widths=240>
@@ Line 24: / Line 86: @@
 </gallery>
-== Technical ==
+== Source ==
-* Dumps [[GD-ROM]]s using a [[BBA]] over the network to a PC
+[https://www.gotwalls.com/ gotwalls.com]
-== Source ==
+== Historical builds ==
-[https://www.gotwalls.com/ https://www.gotwalls.com/]
+*[[:File:Httpd-ack-20080711.zip|httpd-ack 20080711 elf + cdi]]
+*[[:File:Httpd-ack-20071123.zip|httpd-ack 20071123 elf + cdi]]
+*[[:File:Httpd-ack-20070720.zip|httpd-ack 20070720 elf + cdi]]
+*[[:File:Httpd-ack-gdr-test3.zip|httpd-ack gdr-test BETA 3 from 20070626 elf only]]
+*[[:File:Httpd-ack-gdr-test2.zip|httpd-ack gdr-test BETA 2 from 20070626 elf only]]
+*[[:File:Httpd-ack-gdr-test.zip|httpd-ack gdr-test BETA 1 from 20070625 elf only]]
+*[[:File:Httpd-ack-20070624.zip|httpd-ack 20070624 elf only]]
+*[[:File:Httpd-ack-20070511.zip|httpd-ack 20070511 elf + cdi]]
+*[[:File:Httpd-ack-20070430.zip|httpd-ack 20070430 elf + cdi]]
 __NOTOC__
 {{DISPLAYTITLE:httpd-ack}}