HP-67 FUN rom documentation thread

[Dieter]

(11-30-2016 05:07 PM)Gene Wrote:  There are some items that still need to be done. By PROGRAM, here is what is needed.

2636 - Need information for usage of labels and registers
CH - Need information for usage of labels and registers (Chess game)
GOLF - Need information for usage of labels and registers

OK, here is some first information.

============================================================

"2636"

Registers:

Game of 26:
00: random seed
01: bank
02: counts occurences of user's number
03: loop counter (13 runs)
04: loop counter (10 dice per run)
05: user's number, amount won/lost

Game of 36:
00: random seed
01: bank
02: control number for indirect call (8=user, 9=HP)
03: user's score
04: HP's score
05: bet

Relevant Labels:
A: Start game of 26
B: Enter bet, start game of 36, user first
C: Enter bet, start game of 36, HP first
D: show bank
08: user rolls a die
09: HP rolls a die
77: roll a die, display scores, check if > 36.
88: adjust and display amount won/lost, show bank
99: roll a die (random number between 1 and 6)

00...03, 06, 07: used

Flags:
00: set if score > 36
01: set=user first, clear=HP first

============================================================

"CH"

Registers:
01: move counter

Relevant Labels:
01: append "P" for pawn
02: append "N" for knight
03: append "B" for bishop
04: append "R" for rook
05: append "Q" for queen
06: append "K" for king
07: display HP's move (calls 98), get user's move and divide by 10
08: second last move
09: display final move, "checkmate"
98: decode move, generate Alpha incl. "check" (if applicable)
99: display HP's move (calls 98), get user's move

00, 10...15: used

============================================================

"GOLF"

Registers:
00: random seed
01: distance to hole
02: modified user input at E, loop counter
03: user input at B, C, D
04: shot counter

Labels:
01: used
02: putter loop
03: displays distance to hole in yards or feet
04: reads and checks user input at B, C, D

A: new game
B: Enter 1..4, hit a wood club
C: Enter 1..9, hit an iron
D: Enter 1..3, hit a wedge
E: Enter 1..15, use the putter

============================================================

I would rather see XROM "S" and XROM "R" in the listings (instead of 23,25 and 23,26). The seed does not require at least 6 decimals, not even preferably. Actually it does not matter whether you enter 0,3 or 0,345678 – one is as good as the other. The seed should have at most 9 decimals, preferably up to 6.

"GOLF": Typo at 2b): "shows" instead of "shots".
"JT": the instructions should say that the secret number is between 0 and 99. ;-)
"CHK": the instructions need some major corrections. The output is different from what's mentioned there (nothing "left or right of the decimal point", missing WIN/PAY message, first example should read 5, 56, 566, etc.).
"SD": I posted an optimized version that requires less registers (and clears flag 29 ;-)). Obviously it did not make it into the ROM.

Dieter