Here is a collection of 1970-1994 Tecmo Super Bowl roms. It is by no means perfect or final, but I feel it's as good as I like it to be for now. I would like to thank all the guys at Tecmo Bowl.org., because it was all their hard work that allowed me to make these roms in the first place.
In order to edit the players in a way that would reflect the seasons that the roms were designed for, and allow the game to feel and play a lot like the original, I had to assign player ratings that were similar to each and every player in the classic NES Tecmo Super Bowl. In other words, I had assigned the fastest running back (based on most yards from scrimmage, mind you) with the only 75 maximum speed rating, that in my opinion had been erroneously given to Bo Jackson. If anyone deserved a rating like that (I think nobody does, really), it's Thurman Thomas. He had a monster three or four years going, if you were to take into account of what he did on the field and where his team ended up in those years. But I digress.
Although offensive players were a lot easier to rate, I found that offensive linemen and defensive skilled position players weren't and that a lack of info made them almost impossible. I can sort of live with that, though. If it wasn't for the internet, and Pro Football Reference.Com for that matter, it would have been impossible to edit any. I was at least able to edit the all pros for those years, making them the best at their positions.
The basic formula I had to come up with when assigning player ratings had to be based on participation and production, not on popularity. Having said that, I had to be fair to all the players who excelled in seasons where their peers were either absent due to injury or failed to outplay their teammates. Keep in mind that some productive offensive players had to be replaced with Kick and Punt returners - with the lack of space on the roster, I tried to make the depth charts as accurate as I possibly could.
(List of Edits)
1970-1975 roms contain only the 26 teams at that time.
Team rosters and depth charts, as well as pro bowl teams, are all accurately edited to reflect their corresponding seasons.
At least 99% of the players will have the correct name spelling, jersey number, for the most part his face image, as well as skin color.
Accurate team city names.
Accurate home and away game schedules and their actual dates.
Helmet colors and logo designs, as well as uniforms, were all redone to be based on each year they were used.
All playbooks were edited to somewhat match the team's yearly offense, but some liberties were taken to make use of every play that's available in the game.
1970-77 roms were juiced a bit. Week 1 games will play like Week 3 if the player's team had been 2-0 in the original TSB. This was done so that a 14-0 win/loss season will play like a 16-0 win/loss season when entering the playoffs.
1970-71: hash marks are spread out (NCAA still uses this method)
1970-1973: 40 yard kick off position - Tecmo logos are located there, too; front field goal posts (imagine them as being transparent when players stand on them, because I do. - field goal kicking length was increased to make up for closer field goal posts; ball will be placed at the opponent's 20 yard line after any missed field goals; no overtime in man games, as well as auto skipped games. Note: the overtime hack doesn't work as good as I would have liked it to - playoff games will end up in ties, but a random winner is decided by the computer anyway, allowing one of the teams to move on to the next round. This only applies to skipped games - "man" games will still go into overtime during the playoffs. 8 team playoff schedule format. 14 game schedule.
1974-1977: 8 team playoff schedule format. 14 game schedule.
1978-1989: 10 team playoff schedule format.
1982: short season rom contains the 12 team playoff schedule format, as I wasn't able to implement a 16 team playoff format...not sure if it's even possible to do this, anyway.
1994: 30 yard kick off position - Tecmo logos are located there, too. All missed FGs will be placed at the spot of the kick. No two point conversion hack. Maybe one day someone will figure this out and I'll add it later. I hope.
Well, I hope you enjoy the roms. Cheers.