Register - Login
Views: 99351848
 Main - Memberlist - Active users - Calendar - Wiki - IRC Chat - Online users
Ranks - Rules/FAQ - Stats - Latest Posts - Color Chart - Smilies		 04-21-22 06:56:53 PM
Jul - The Cutting Room Floor - Tecmo Bowl New poll - New thread - New reply
Next newer thread | Next older thread
rabidabid
Member
Level: 27


Posts: 25/135
EXP: 102339
For next: 13820

Since: 08-25-10


Since last post: 21 days
Last activity: 4 days
Posted on 03-02-11 10:45:09 PM Link | Quote
There are a couple weird/neat things about this game that should probably be looked into or something.

Error Screen

(crappy television picture taken circa 2005)

One day I started this game up and noticed the graphics were a little glitchy. I decided to wiggle the cartridge around while the game was still on and this screen came up. I think I was at the title screen. The values on the screen would change every second or so. I haven't been able to recreate it since.


Strange Passwords
There's a fairly well-known password out there, 397BFFA5, which causes the game to act weird. The field turns gray, the players turn invisible and run at hyper speed. The game essentially ends when you're asked to pick an offensive play. All the plays are blank and your players can't do anything. The other players can't tackle them and the clock won't stop the game because the ball is still in play.

This password was published in the official Nintendo Player's Guide: Top Secret Passwords (as "Invisible Team"). I thought this was the only password until I saw this YouTube video. This video uses a different password, 3C3F7FA5, with similar effects. It leads me to believe there could be many more passwords that can do the same stuff. The person who made the video seems to have an understanding of how the game's password system works, but hasn't been on YouTube in several months. See the video description and comment he left on the video for detailz.

The Game Boy version of the game must use the same password system because both of these passwords work there too... albeit with much more playable results - you're actually capable of finishing a game.
Rick
M'Lord, there's a knife in your head!
Level: 152


Posts: 3159/7539
EXP: 43656715
For next: 644945

Since: 02-15-10

From: Maine

Since last post: 110 days
Last activity: 42 days
Posted on 03-03-11 04:13:12 AM Link | Quote
Nice find on that debugger thing, or so it seems! I don't think I could really jump into the game's code to figure it out, but I'm sure that's something one of these computer literate people could do.

I also have to wonder if the "Invisible Team" is a deleted team, garbage data, or what. That sure doesn't make a lot of sense if that is valid. Isn't there usually a checksum in passwords to prevent against screwy stuff like that?

I'm going to throw my hat for the "deleted team" theory, kind of like how Sheeva is still available in SNES UMK3 as an oversight.

____________________
Rachel Mae

Creature of Chaos
Level: 141


Posts: 3763/5929
EXP: 33568253
For next: 551761

Since: 07-03-07

Pronouns: she/her
From: Foxglen

Since last post: 9 days
Last activity: 2 hours
Posted on 03-03-11 05:21:54 AM Link | Quote
Originally posted by Rick
Isn't there usually a checksum in passwords to prevent against screwy stuff like that?
Checksums are generally intended only to prevent players from entering random characters. Most games don't bother performing further validity checks if the checksum is good.

____________________
Rachel Mae

Creature of Chaos
Level: 141


Posts: 3764/5929
EXP: 33568253
For next: 551761

Since: 07-03-07

Pronouns: she/her
From: Foxglen

Since last post: 9 days
Last activity: 2 hours
Posted on 03-03-11 06:25:21 AM Link | Quote
Hmm, does this look familiar?



Apparently that's the game's BRK handler, which the vast majority of NES games don't have. You can see it in FCEUX by clicking "Step Into" in the debugger and entering $FFEF in the PC box (or any other address containing the value 00). The addresses displayed automatically increment by 0x40 every 23 seconds or so.

____________________
Rick
M'Lord, there's a knife in your head!
Level: 152


Posts: 3162/7539
EXP: 43656715
For next: 644945

Since: 02-15-10

From: Maine

Since last post: 110 days
Last activity: 42 days
Posted on 03-03-11 02:19:00 PM Link | Quote
It's interesting there that in rabidabid's photo, it's Bank 1, but in your screenshot it's Bank 2.

I'm sure it probably doesn't mean anything, though. So what exactly is this used for? Is it like the crash debugger thing in Zelda: Ocarina of Time or something, or am I getting it wrong again?

...I really hate my lack of programming knowledge.

____________________
Joe
Common spammer
🍬
Level: 111


Posts: 1912/3392
EXP: 14485671
For next: 382689

Since: 08-02-07

From: Pororoca

Since last post: 21 hours
Last activity: 4 hours
Posted on 03-03-11 08:53:46 PM Link | Quote
It's a RAM dump, which is about the closest you can get to a crash debugger on the NES.

Technically you can't have a crash debugger on the NES because the CPU hard locks when it crashes. (Some crash-inducing opcodes cause something like an infinite loop, where it still accesses memory, while others cause the CPU's internal timing system to stop. Either way, you can't make a crash debugger run afterwards.)

____________________
rabidabid
Member
Level: 27


Posts: 26/135
EXP: 102339
For next: 13820

Since: 08-25-10


Since last post: 21 days
Last activity: 4 days
Posted on 03-04-11 12:17:25 AM Link | Quote
Nice! I tested it out and mostly got screens that say Bank 1 but I occasionally got a Bank 2 screen too.

Seeing how Cah4e3 found a screen in Tecmo Super Bowl too, it got me curious about the SNES and Genesis versions of Tecmo Super Bowl. I did a search for "error" in a hex editor and found a bunch of error messages.

SNES version (starting at 0x16C2):
ERR 00 DATA RANGE OVERFLOW yADDRESS)zERR DATA y ERR 01 DATA RANGE UNDERFLOW yADDRESS)zERR DATA y ERR 02 SPRITE MAX ERROR yADDRESS)zERR DATA y ERR 03 yADDRESS)zERR DATA

Genesis version (starting at 0x3FBDE):
GMSG REQUEST NUMBER ERROR !

Genesis version (starting at 0x4182):
MSG A 8X8 OVER FLOW MSG A 16X OVER FLOW MSG B 8X8 OVER FLOW MSG B 16X OVER FLOW MSG W 8X8 OVER FLOW MSG W 16X OVER FLOW CONTE NUMBER ISERROR ADDRESS IS



Also, for kicks I opened up the GB version of Tecmo Bowl and found this:
TECMO BOWL VER 1.0 6-19-91 (C) COPYRIGHT 1991 (P) TECMO LTD. 18005 S. ADRIA MARU LANE CARSON CALIF. 90746 U.S.A. (213) 329-5880


As for the password stuff, I imagine they went through some crunch time and had to cut some teams out, but the password system was already finished and designed for 16 teams, so they left it as-is thinking nobody would find out.
Teflon
Member
Level: 60


Posts: 629/874
EXP: 1676434
For next: 96344

Since: 10-12-10


Since last post: 5.3 years
Last activity: 4.2 years
Posted on 03-04-11 02:53:50 AM Link | Quote
Do you think there are any others leftovers from back when you think the game had 16 teams, or are those passwords it?

____________________
Photobucket
Rick
M'Lord, there's a knife in your head!
Level: 152


Posts: 3171/7539
EXP: 43656715
For next: 644945

Since: 02-15-10

From: Maine

Since last post: 110 days
Last activity: 42 days
Posted on 03-04-11 04:29:12 AM Link | Quote
Could be. A better chance would be to check out the Tecmo Bowl proto, but I'm unaware of any differences aside from the title screen.

____________________
rabidabid
Member
Level: 27


Posts: 27/135
EXP: 102339
For next: 13820

Since: 08-25-10


Since last post: 21 days
Last activity: 4 days
Posted on 03-04-11 04:45:28 AM Link | Quote
Heck, it could just be a simple programming mistake on the password system designer's end, and they never intended to have more teams.
andlabs
Member
Level: 38


Posts: 6/309
EXP: 360985
For next: 9462

Since: 03-19-10

From: United States

Since last post: 1.1 years
Last activity: 126 days
Posted on 03-04-11 05:40:49 AM Link | Quote
For the Genesis version there is an error vector at the top of ROM; this vector is predefined by Motorola and part of the 68000. Here's the vector (as well as the Genesis's IRQs). Later I could try to see what Tecmo Super Bowl does on various errors, though they may just do what most other games do and freeze...
Rachel Mae

Creature of Chaos
Level: 141


Posts: 3778/5929
EXP: 33568253
For next: 551761

Since: 07-03-07

Pronouns: she/her
From: Foxglen

Since last post: 9 days
Last activity: 2 hours
Posted on 03-05-11 12:32:01 AM Link | Quote
Originally posted by rabidabid
Heck, it could just be a simple programming mistake on the password system designer's end, and they never intended to have more teams.
Not so much a mistake, but more a side effect of working with binary data. The team IDs in the password are probably 4 bits, which gives you 16 values to choose from, regardless of how many are actually valid. The "unused teams" are most likely just fetching garbage data from beyond valid table boundaries.

____________________
andlabs
Member
Level: 38


Posts: 7/309
EXP: 360985
For next: 9462

Since: 03-19-10

From: United States

Since last post: 1.1 years
Last activity: 126 days
Posted on 03-05-11 02:34:04 AM (last edited by andlabs at 03-04-11 11:37 PM) Link | Quote
Looked into the Genesis one. The error vectors all just store the error number and the instruction (and data, for errors that have accompanying data like address error — using a word or longword access on odd addresses) in memory and hang, waiting for a debugger or something to examine those memory addresses. The trap vectors are used by the main program to do mundane tasks like queue subroutines to jump to for code flow (I've seen other games like Maten no Soumetsu do this too).

"MSG A 8X8 OVER FLOW" and the like sound like errors used by the plane map generator for when the game somehow asks to make plane maps (the MD has three planes — the scrollable Plane A and Plane B and optional, nonscrollable/nontransparent Window) larger than they should be, with 8x8 talking about individual tiles... or something along those lines; I'm not sure how this game does art by how quickly I examined the small amount of code I did examine =P
CaH4e3
User
Level: 8


Posts: 1/10
EXP: 2015
For next: 172

Since: 03-08-11


Since last post: 10.2 years
Last activity: 8.9 years
Posted on 03-08-11 02:02:19 PM Link | Quote
Originally posted by Waffle Ryebread
Originally posted by rabidabid
Heck, it could just be a simple programming mistake on the password system designer's end, and they never intended to have more teams.
Not so much a mistake, but more a side effect of working with binary data. The team IDs in the password are probably 4 bits, which gives you 16 values to choose from, regardless of how many are actually valid. The "unused teams" are most likely just fetching garbage data from beyond valid table boundaries.


you absolutely right
Here is a complete passgen, you can see there is 4 extra unused teams to select but no one even cares about checking boundaries...
Xkeeper

Level: 263


Posts: 18919/25343
EXP: 296649796
For next: 2310657

Since: 07-03-07

Pronouns: they/them/????????

Since last post: 6 days
Last activity: 15 hours
Posted on 03-08-11 02:38:45 PM Link | Quote
The same "basic validation only" phenomenon occurs in a lot of other games, too, notably Metroid.

Interesting BRK handler, though.

____________________
Next newer thread | Next older thread
Jul - The Cutting Room Floor - Tecmo Bowl New poll - New thread - New reply


Rusted Logic
Acmlmboard - commit 47be4dc [2021-08-23]
©2000-2022 Acmlm, Xkeeper, Kaito Sinclaire, et al.

33 database queries, 3 query cache hits.
Query execution time:  0.101781 seconds
Script execution time:  0.027207 seconds
Total render time:  0.128988 seconds


TidyHTML vomit below
line 1 column 1 - Warning: missing <!DOCTYPE> declaration
line 2 column 301 - Warning: unescaped & or unknown entity "&page"
line 119 column 11 - Warning: <form> isn't allowed in <table> elements
line 118 column 10 - Info: <table> previously mentioned
line 120 column 11 - Warning: missing <tr>
line 120 column 119 - Warning: missing </font> before </td>
line 124 column 16 - Warning: plain text isn't allowed in <tr> elements
line 120 column 11 - Info: <tr> previously mentioned
line 125 column 68 - Warning: missing </nobr> before </td>
line 141 column 68 - Warning: missing </nobr> before <tr>
line 147 column 35 - Warning: missing <tr>
line 147 column 50 - Warning: missing </font> before </td>
line 148 column 37 - Warning: unescaped & or unknown entity "&id"
line 147 column 181 - Warning: missing </font> before </table>
line 149 column 35 - Warning: missing <tr>
line 149 column 50 - Warning: missing </font> before </td>
line 149 column 91 - Warning: missing </font> before </table>
line 156 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 158 column 9 - Warning: missing <tr>
line 176 column 13 - Warning: missing <tr>
line 177 column 102 - Warning: unescaped & or unknown entity "&postid"
line 196 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 198 column 9 - Warning: missing <tr>
line 216 column 13 - Warning: missing <tr>
line 217 column 102 - Warning: unescaped & or unknown entity "&postid"
line 226 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 228 column 9 - Warning: missing <tr>
line 246 column 13 - Warning: missing <tr>
line 247 column 102 - Warning: unescaped & or unknown entity "&postid"
line 249 column 74 - Warning: <style> isn't allowed in <td> elements
line 249 column 9 - Info: <td> previously mentioned
line 252 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 254 column 9 - Warning: missing <tr>
line 272 column 13 - Warning: missing <tr>
line 273 column 102 - Warning: unescaped & or unknown entity "&postid"
line 275 column 74 - Warning: <style> isn't allowed in <td> elements
line 275 column 9 - Info: <td> previously mentioned
line 282 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 284 column 9 - Warning: missing <tr>
line 302 column 13 - Warning: missing <tr>
line 303 column 102 - Warning: unescaped & or unknown entity "&postid"
line 312 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 314 column 9 - Warning: missing <tr>
line 332 column 13 - Warning: missing <tr>
line 333 column 102 - Warning: unescaped & or unknown entity "&postid"
line 335 column 74 - Warning: <style> isn't allowed in <td> elements
line 335 column 9 - Info: <td> previously mentioned
line 340 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 342 column 9 - Warning: missing <tr>
line 360 column 13 - Warning: missing <tr>
line 361 column 102 - Warning: unescaped & or unknown entity "&postid"
line 381 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 383 column 9 - Warning: missing <tr>
line 401 column 13 - Warning: missing <tr>
line 402 column 102 - Warning: unescaped & or unknown entity "&postid"
line 404 column 326 - Warning: discarding unexpected </a>
line 407 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 409 column 9 - Warning: missing <tr>
line 427 column 13 - Warning: missing <tr>
line 428 column 102 - Warning: unescaped & or unknown entity "&postid"
line 433 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 435 column 9 - Warning: missing <tr>
line 453 column 13 - Warning: missing <tr>
line 454 column 102 - Warning: unescaped & or unknown entity "&postid"
line 459 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 461 column 9 - Warning: missing <tr>
line 479 column 13 - Warning: missing <tr>
line 480 column 102 - Warning: unescaped & or unknown entity "&postid"
line 485 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 487 column 9 - Warning: missing <tr>
line 505 column 13 - Warning: missing <tr>
line 506 column 102 - Warning: unescaped & or unknown entity "&postid"
line 508 column 74 - Warning: <style> isn't allowed in <td> elements
line 508 column 9 - Info: <td> previously mentioned
line 511 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 513 column 9 - Warning: missing <tr>
line 531 column 13 - Warning: missing <tr>
line 532 column 102 - Warning: unescaped & or unknown entity "&postid"
line 539 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 541 column 9 - Warning: missing <tr>
line 559 column 13 - Warning: missing <tr>
line 560 column 102 - Warning: unescaped & or unknown entity "&postid"
line 568 column 9 - Warning: <div> isn't allowed in <table> elements
line 152 column 17 - Info: <table> previously mentioned
line 570 column 9 - Warning: missing <tr>
line 588 column 13 - Warning: missing <tr>
line 589 column 102 - Warning: unescaped & or unknown entity "&postid"
line 591 column 281 - Warning: missing <tr>
line 591 column 565 - Warning: missing <tr>
line 596 column 17 - Warning: missing <tr>
line 596 column 17 - Warning: discarding unexpected <table>
line 599 column 35 - Warning: missing <tr>
line 599 column 50 - Warning: missing </font> before </td>
line 599 column 91 - Warning: missing </font> before </table>
line 601 column 35 - Warning: missing <tr>
line 601 column 50 - Warning: missing </font> before </td>
line 602 column 37 - Warning: unescaped & or unknown entity "&id"
line 601 column 181 - Warning: missing </font> before </table>
line 603 column 17 - Warning: discarding unexpected </textarea>
line 603 column 28 - Warning: discarding unexpected </form>
line 603 column 35 - Warning: discarding unexpected </embed>
line 603 column 43 - Warning: discarding unexpected </noembed>
line 603 column 53 - Warning: discarding unexpected </noscript>
line 603 column 64 - Warning: discarding unexpected </noembed>
line 603 column 74 - Warning: discarding unexpected </embed>
line 603 column 82 - Warning: discarding unexpected </table>
line 603 column 90 - Warning: discarding unexpected </table>
line 605 column 9 - Warning: missing </font> before <table>
line 617 column 25 - Warning: discarding unexpected </font>
line 626 column 57 - Warning: discarding unexpected </font>
line 604 column 1 - Warning: missing </center>
line 120 column 63 - Warning: <img> lacks "alt" attribute
line 125 column 19 - Warning: <td> attribute "width" has invalid value "120px"
line 125 column 93 - Warning: <img> lacks "alt" attribute
line 141 column 19 - Warning: <td> attribute "width" has invalid value "120px"
line 141 column 98 - Warning: <img> lacks "alt" attribute
line 148 column 44 - Warning: <img> proprietary attribute value "absmiddle"
line 148 column 142 - Warning: <img> proprietary attribute value "absmiddle"
line 148 column 246 - Warning: <img> proprietary attribute value "absmiddle"
line 161 column 22 - Warning: <img> lacks "alt" attribute
line 161 column 63 - Warning: <img> lacks "alt" attribute
line 161 column 113 - Warning: <img> lacks "alt" attribute
line 162 column 11 - Warning: <img> lacks "alt" attribute
line 172 column 15 - Warning: <img> lacks "alt" attribute
line 182 column 207 - Warning: <img> lacks "alt" attribute
line 201 column 23 - Warning: <img> lacks "alt" attribute
line 201 column 64 - Warning: <img> lacks "alt" attribute
line 201 column 113 - Warning: <img> lacks "alt" attribute
line 201 column 163 - Warning: <img> lacks "alt" attribute
line 202 column 11 - Warning: <img> lacks "alt" attribute
line 212 column 15 - Warning: <img> lacks "alt" attribute
line 223 column 688 - Warning: <img> lacks "alt" attribute
line 230 column 11 - Warning: <img> lacks "alt" attribute
line 231 column 23 - Warning: <img> lacks "alt" attribute
line 231 column 64 - Warning: <img> lacks "alt" attribute
line 231 column 113 - Warning: <img> lacks "alt" attribute
line 231 column 163 - Warning: <img> lacks "alt" attribute
line 232 column 11 - Warning: <img> lacks "alt" attribute
line 242 column 15 - Warning: <img> lacks "alt" attribute
line 256 column 11 - Warning: <img> lacks "alt" attribute
line 257 column 23 - Warning: <img> lacks "alt" attribute
line 257 column 64 - Warning: <img> lacks "alt" attribute
line 257 column 113 - Warning: <img> lacks "alt" attribute
line 257 column 163 - Warning: <img> lacks "alt" attribute
line 258 column 11 - Warning: <img> lacks "alt" attribute
line 268 column 15 - Warning: <img> lacks "alt" attribute
line 275 column 2357 - Warning: <img> proprietary attribute value "absmiddle"
line 275 column 2357 - Warning: <img> lacks "alt" attribute
line 277 column 2414 - Warning: <img> lacks "alt" attribute
line 287 column 23 - Warning: <img> lacks "alt" attribute
line 287 column 64 - Warning: <img> lacks "alt" attribute
line 287 column 113 - Warning: <img> lacks "alt" attribute
line 287 column 163 - Warning: <img> lacks "alt" attribute
line 288 column 11 - Warning: <img> lacks "alt" attribute
line 298 column 15 - Warning: <img> lacks "alt" attribute
line 309 column 463 - Warning: <img> lacks "alt" attribute
line 317 column 23 - Warning: <img> lacks "alt" attribute
line 317 column 64 - Warning: <img> lacks "alt" attribute
line 317 column 113 - Warning: <img> lacks "alt" attribute
line 317 column 163 - Warning: <img> lacks "alt" attribute
line 318 column 11 - Warning: <img> lacks "alt" attribute
line 328 column 15 - Warning: <img> lacks "alt" attribute
line 345 column 22 - Warning: <img> lacks "alt" attribute
line 345 column 63 - Warning: <img> lacks "alt" attribute
line 345 column 113 - Warning: <img> lacks "alt" attribute
line 346 column 11 - Warning: <img> lacks "alt" attribute
line 356 column 15 - Warning: <img> lacks "alt" attribute
line 386 column 22 - Warning: <img> lacks "alt" attribute
line 386 column 63 - Warning: <img> lacks "alt" attribute
line 386 column 111 - Warning: <img> lacks "alt" attribute
line 386 column 161 - Warning: <img> lacks "alt" attribute
line 387 column 11 - Warning: <img> lacks "alt" attribute
line 397 column 15 - Warning: <img> lacks "alt" attribute
line 412 column 23 - Warning: <img> lacks "alt" attribute
line 412 column 64 - Warning: <img> lacks "alt" attribute
line 412 column 113 - Warning: <img> lacks "alt" attribute
line 412 column 163 - Warning: <img> lacks "alt" attribute
line 413 column 11 - Warning: <img> lacks "alt" attribute
line 423 column 15 - Warning: <img> lacks "alt" attribute
line 430 column 239 - Warning: <img> lacks "alt" attribute
line 438 column 22 - Warning: <img> lacks "alt" attribute
line 438 column 63 - Warning: <img> lacks "alt" attribute
line 438 column 113 - Warning: <img> lacks "alt" attribute
line 439 column 11 - Warning: <img> lacks "alt" attribute
line 449 column 15 - Warning: <img> lacks "alt" attribute
line 464 column 22 - Warning: <img> lacks "alt" attribute
line 464 column 63 - Warning: <img> lacks "alt" attribute
line 464 column 112 - Warning: <img> lacks "alt" attribute
line 464 column 162 - Warning: <img> lacks "alt" attribute
line 465 column 11 - Warning: <img> lacks "alt" attribute
line 475 column 15 - Warning: <img> lacks "alt" attribute
line 489 column 11 - Warning: <img> lacks "alt" attribute
line 490 column 23 - Warning: <img> lacks "alt" attribute
line 490 column 64 - Warning: <img> lacks "alt" attribute
line 490 column 113 - Warning: <img> lacks "alt" attribute
line 490 column 163 - Warning: <img> lacks "alt" attribute
line 491 column 11 - Warning: <img> lacks "alt" attribute
line 501 column 15 - Warning: <img> lacks "alt" attribute
line 516 column 22 - Warning: <img> lacks "alt" attribute
line 516 column 63 - Warning: <img> lacks "alt" attribute
line 516 column 112 - Warning: <img> lacks "alt" attribute
line 516 column 162 - Warning: <img> lacks "alt" attribute
line 517 column 11 - Warning: <img> lacks "alt" attribute
line 527 column 15 - Warning: <img> lacks "alt" attribute
line 544 column 21 - Warning: <img> lacks "alt" attribute
line 544 column 62 - Warning: <img> lacks "alt" attribute
line 544 column 111 - Warning: <img> lacks "alt" attribute
line 544 column 161 - Warning: <img> lacks "alt" attribute
line 555 column 15 - Warning: <img> lacks "alt" attribute
line 573 column 23 - Warning: <img> lacks "alt" attribute
line 573 column 64 - Warning: <img> lacks "alt" attribute
line 573 column 113 - Warning: <img> lacks "alt" attribute
line 573 column 163 - Warning: <img> lacks "alt" attribute
line 574 column 11 - Warning: <img> lacks "alt" attribute
line 584 column 15 - Warning: <img> lacks "alt" attribute
line 591 column 333 - Warning: <img> lacks "alt" attribute
line 593 column 837 - Warning: <img> lacks "alt" attribute
line 602 column 44 - Warning: <img> proprietary attribute value "absmiddle"
line 602 column 142 - Warning: <img> proprietary attribute value "absmiddle"
line 602 column 246 - Warning: <img> proprietary attribute value "absmiddle"
line 611 column 25 - Warning: <img> lacks "alt" attribute
line 616 column 267 - Warning: <img> lacks "alt" attribute
line 149 column 50 - Warning: trimming empty <font>
line 596 column 17 - Warning: trimming empty <tr>
line 599 column 50 - Warning: trimming empty <font>
line 125 column 68 - Warning: <nobr> is not approved by W3C
line 141 column 68 - Warning: <nobr> is not approved by W3C
line 177 column 27 - Warning: <nobr> is not approved by W3C
line 217 column 27 - Warning: <nobr> is not approved by W3C
line 247 column 27 - Warning: <nobr> is not approved by W3C
line 273 column 27 - Warning: <nobr> is not approved by W3C
line 303 column 27 - Warning: <nobr> is not approved by W3C
line 333 column 27 - Warning: <nobr> is not approved by W3C
line 361 column 27 - Warning: <nobr> is not approved by W3C
line 402 column 27 - Warning: <nobr> is not approved by W3C
line 428 column 27 - Warning: <nobr> is not approved by W3C
line 454 column 27 - Warning: <nobr> is not approved by W3C
line 480 column 27 - Warning: <nobr> is not approved by W3C
line 506 column 27 - Warning: <nobr> is not approved by W3C
line 532 column 27 - Warning: <nobr> is not approved by W3C
line 560 column 27 - Warning: <nobr> is not approved by W3C
line 589 column 27 - Warning: <nobr> is not approved by W3C
Info: Document content looks like HTML5
Info: No system identifier in emitted doctype
Tidy found 235 warnings and 0 errors!


The alt attribute should be used to give a short description
of an image; longer descriptions should be given with the
longdesc attribute which takes a URL linked to the description.
These measures are needed for people using non-graphical browsers.

For further advice on how to make your pages accessible
see http://www.w3.org/WAI/GL.
You are recommended to use CSS to specify the font and
properties such as its size and color. This will reduce
the size of HTML files and make them easier to maintain
compared with using <FONT> elements.

You are recommended to use CSS to control line wrapping.
Use "white-space: nowrap" to inhibit wrapping in place
of inserting <NOBR>...</NOBR> into the markup.

About HTML Tidy: https://github.com/htacg/tidy-html5
Bug reports and comments: https://github.com/htacg/tidy-html5/issues
Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
Latest HTML specification: http://dev.w3.org/html5/spec-author-view/
Validate your HTML documents: http://validator.w3.org/nu/
Lobby your company to join the W3C: http://www.w3.org/Consortium

Do you speak a language other than English, or a different variant of
English? Consider helping us to localize HTML Tidy. For details please see
https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md