Here is the program itself and the program metadata.
Both of craps.chip8 and craps.mmc are available under the CC0 Public Domain Dedication.
This is documentation for the craps game provided in the sixth edition of VIPER magazine; follows is a view of the program when it is first loaded into the tool:
200-201 0512-0513 ▀▀ ▄ ▀ 6108 24840 V1 ← 008
202-203 0514-0515 ▄▀▄▄ ▀ 2258 08792 Call 0600
204-205 0516-0517 ▀▀▄ ▄▀ 6112 24850 V1 ← 018
206-207 0518-0519 ▄▀▄▄ ▀ 2258 08792 Call 0600
208-209 0520-0521 ▀▀▀▀█▀█ FE0A 65034 VE ← key
20A-20B 0522-0523 ▀▀ ▄ █ 6109 24841 V1 ← 009
20C-20D 0524-0525 ▄█ ▀ 2260 08800 Call 0608
20E-20F 0526-0527 ▀ ▀▀▀ 8700 34560 V7 ← V0
210-211 0528-0529 ▀▀▄ ▄█ 6113 24851 V1 ← 019
212-213 0530-0531 ▄█ ▀ 2260 08800 Call 0608
214-215 0532-0533 ▀ ▀ 8800 34816 V8 ← V0
216-217 0534-0535 █ ▀ ▀ 8980 35200 V9 ← V8
218-219 0536-0537 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
21A-21B 0538-0539 ▀ ▀ ▄▀ 4902 18690 Skip next if V9 <> 002
21C-21D 0540-0541 ▄ █▄▄▀ 129C 04764 Jump to 0668
21E-21F 0542-0543 ▀ ▀ ▄█ 4903 18691 Skip next if V9 <> 003
220-221 0544-0545 ▄ █▄▄▀ 129C 04764 Jump to 0668
222-223 0546-0547 ▀ █▄ ▀ 490C 18700 Skip next if V9 <> 012
224-225 0548-0549 ▄ █▄▄▀ 129C 04764 Jump to 0668
226-227 0550-0551 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
228-229 0552-0553 ▄ ▀▄▄▀ 128C 04748 Jump to 0652
22A-22B 0554-0555 ▀ █ ▄█ 490B 18699 Skip next if V9 <> 011
22C-22D 0556-0557 ▄ ▀▄▄▀ 128C 04748 Jump to 0652
22E-22F 0558-0559 █ ▄▀ ▀ 8A90 35472 VA ← V9
230-231 0560-0561 █▀ 6040 24640 V0 ← 064
232-233 0562-0563 ▀▀▀█ ▄ ▄ F015 61461 delay ← V0
234-235 0564-0565 ▀▀▀▀ ▄▄▄ F007 61447 V0 ← delay
236-237 0566-0567 ▀▀ 3000 12288 Skip next if V0 = 000
238-239 0568-0569 ▄█ ▄▀ 1234 04660 Jump to 0564
23A-23B 0570-0571 ▄█▄▄▄▀ 227C 08828 Call 0636
23C-23D 0572-0573 ▀▀▀▀█▀█ FE0A 65034 VE ← key
23E-23F 0574-0575 ▀▀ ▄ █ 6109 24841 V1 ← 009
240-241 0576-0577 ▄█ ▀ 2260 08800 Call 0608
242-243 0578-0579 ▀ ▀▀▀ 8700 34560 V7 ← V0
244-245 0580-0581 ▀▀▄ ▄█ 6113 24851 V1 ← 019
246-247 0582-0583 ▄█ ▀ 2260 08800 Call 0608
248-249 0584-0585 ▀ ▀ 8800 34816 V8 ← V0
24A-24B 0586-0587 █ ▀ ▀ 8980 35200 V9 ← V8
24C-24D 0588-0589 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
24E-24F 0590-0591 █ ▄▀▀ ▀ 99A0 39328 Skip next if V9 <> VA
250-251 0592-0593 ▄ ▀▄▄▀ 128C 04748 Jump to 0652
252-253 0594-0595 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
254-255 0596-0597 ▄ █▄▄▀ 129C 04764 Jump to 0668
256-257 0598-0599 ▄█ ▀ 1230 04656 Jump to 0560
258-259 0600-0601 █▄█▄ ▀ A2F0 41712 I ← 0752
25A-25B 0602-0603 ▀▀ ▄ ▀ 6208 25096 V2 ← 008
25C-25D 0604-0605 ▀▀▄▀ ▄▄█ D127 53543 Draw 08×07 at V1,V2; VF ← XOR
25E-25F 0606-0607 ▄▄▄ ▄▄▄ 00EE 00238 Return
260-261 0608-0609 ▀▀ ▀▀▄ 6601 26113 V6 ← 001
262-263 0610-0611 ▀▀ ▄ ▀▄ 6209 25097 V2 ← 009
264-265 0612-0613 ▀▀ ▄ 6001 24577 V0 ← 001
266-267 0614-0615 ▀▀█▀▄ ▄ F029 61481 I ← digit sprite of V0
268-269 0616-0617 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
26A-26B 0618-0619 ▀▀▀█▄▀▀ F618 63000 sound ← V6
26C-26D 0620-0621 ▀▀ ▄██ C307 49927 V3 ← ??? AND 007
26E-26F 0622-0623 ▀ ▀▀ 4300 17152 Skip next if V3 <> 000
270-271 0624-0625 ▄▄▄ ▄▄▄ 00EE 00238 Return
272-273 0626-0627 ▀▀▀ ▄ 7001 28673 V0 ← V0 + 001
274-275 0628-0629 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
276-277 0630-0631 ▀▀ ▄▄▄ 3007 12295 Skip next if V0 = 007
278-279 0632-0633 ▄▄▀ ▄█ 1266 04710 Jump to 0614
27A-27B 0634-0635 ▄▄▀ ▄▀ 1264 04708 Jump to 0612
27C-27D 0636-0637 ▀▀ ▄ ▀▄ 6209 25097 V2 ← 009
27E-27F 0638-0639 ▀▀ ▄ █ 6109 24841 V1 ← 009
280-281 0640-0641 ▀▀█▀▄▀▀█ F729 63273 I ← digit sprite of V7
282-283 0642-0643 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
284-285 0644-0645 ▀▀▄ ▄█ 6113 24851 V1 ← 019
286-287 0646-0647 ▀▀█▀█ ▄ F829 63529 I ← digit sprite of V8
288-289 0648-0649 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
28A-28B 0650-0651 ▄▄▄ ▄▄▄ 00EE 00238 Return
28C-28D 0652-0653 █ █ ▄▄▀ A2AC 41644 I ← 0684
28E-28F 0654-0655 ▀▀ 6000 24576 V0 ← 000
290-291 0656-0657 ▀▀▄ ▄ █ 6115 24853 V1 ← 021
292-293 0658-0659 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
294-295 0660-0661 █ █▄ ▀▄ A2B1 41649 I ← 0689
296-297 0662-0663 ▀▀ ▄ 6008 24584 V0 ← 008
298-299 0664-0665 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
29A-29B 0666-0667 ▄ █▄ █ 129A 04762 Jump to 0666
29C-29D 0668-0669 █ █▄ ▄█ A2B6 41654 I ← 0694
29E-29F 0670-0671 ▀▀ 6000 24576 V0 ← 000
2A0-2A1 0672-0673 ▀▀▄ ▀ 6110 24848 V1 ← 016
2A2-2A3 0674-0675 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2A4-2A5 0676-0677 █ █▄▄ █▄ A2BB 41659 I ← 0699
2A6-2A7 0678-0679 ▀▀ ▄ 6008 24584 V0 ← 008
2A8-2A9 0680-0681 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2AA-2AB 0682-0683 ▄ ▄▀▄ █ 12AA 04778 Jump to 0682
2AC-2AD 0684-0685 █ █ ▀█ 8B89 35721
2AE-2AF 0686-0687 █ ▄ █ █ 89A9 35241
2B0-2B1 0688-0689 █▀▄█▀ █▀ DBB2 56242 Draw 08×02 at VB,VB; VF ← XOR
2B2-2B3 0690-0691 █▀▄ █ 322A 12842 Skip next if V2 = 042
2B4-2B5 0692-0693 ▄ █ ██ 26A6 09894 Call 1702
2B6-2B7 0694-0695 █ █▀█ 8E8A 36490
2B8-2B9 0696-0697 █ █ █ 8A8A 35466
2BA-2BB 0698-0699 ███ ███ EEEE 61166
2BC-2BD 0700-0701 █▄▄ █▄ 88EC 35052
2BE-2BF 0702-0703 ▄▄█ █▄▄ 28EE 10478 Call 2286Follows now is the fully annotated view of the program when it is loaded into the tool:
200-201 0512-0513 ▀▀ ▄ ▀ 6108 24840 V1 ← 008
202-203 0514-0515 ▄▀▄▄ ▀ 2258 08792 Call impotent
204-205 0516-0517 ▀▀▄ ▄▀ 6112 24850 V1 ← 018
206-207 0518-0519 ▄▀▄▄ ▀ 2258 08792 Call impotent
208-209 0520-0521 ▀▀▀▀█▀█ FE0A 65034 VE ← key
20A-20B 0522-0523 ▀▀ ▄ █ 6109 24841 V1 ← 009
20C-20D 0524-0525 ▄█ ▀ 2260 08800 Call random draw
20E-20F 0526-0527 ▀ ▀▀▀ 8700 34560 V7 ← V0
210-211 0528-0529 ▀▀▄ ▄█ 6113 24851 V1 ← 019
212-213 0530-0531 ▄█ ▀ 2260 08800 Call random draw
214-215 0532-0533 ▀ ▀ 8800 34816 V8 ← V0
216-217 0534-0535 █ ▀ ▀ 8980 35200 V9 ← V8
218-219 0536-0537 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
21A-21B 0538-0539 ▀ ▀ ▄▀ 4902 18690 Skip next if V9 <> 002
21C-21D 0540-0541 ▄ █▄▄▀ 129C 04764 Jump to lose
21E-21F 0542-0543 ▀ ▀ ▄█ 4903 18691 Skip next if V9 <> 003
220-221 0544-0545 ▄ █▄▄▀ 129C 04764 Jump to lose
222-223 0546-0547 ▀ █▄ ▀ 490C 18700 Skip next if V9 <> 012
224-225 0548-0549 ▄ █▄▄▀ 129C 04764 Jump to lose
226-227 0550-0551 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
228-229 0552-0553 ▄ ▀▄▄▀ 128C 04748 Jump to win
22A-22B 0554-0555 ▀ █ ▄█ 490B 18699 Skip next if V9 <> 011
22C-22D 0556-0557 ▄ ▀▄▄▀ 128C 04748 Jump to win
22E-22F 0558-0559 █ ▄▀ ▀ 8A90 35472 VA ← V9
230-231 0560-0561 █▀ 6040 24640 again V0 ← 064
232-233 0562-0563 ▀▀▀█ ▄ ▄ F015 61461 delay ← V0
234-235 0564-0565 ▀▀▀▀ ▄▄▄ F007 61447 delay V0 ← delay
236-237 0566-0567 ▀▀ 3000 12288 Skip next if V0 = 000
238-239 0568-0569 ▄█ ▄▀ 1234 04660 Jump to delay
23A-23B 0570-0571 ▄█▄▄▄▀ 227C 08828 Call deal draw
23C-23D 0572-0573 ▀▀▀▀█▀█ FE0A 65034 VE ← key
23E-23F 0574-0575 ▀▀ ▄ █ 6109 24841 V1 ← 009
240-241 0576-0577 ▄█ ▀ 2260 08800 Call random draw
242-243 0578-0579 ▀ ▀▀▀ 8700 34560 V7 ← V0
244-245 0580-0581 ▀▀▄ ▄█ 6113 24851 V1 ← 019
246-247 0582-0583 ▄█ ▀ 2260 08800 Call random draw
248-249 0584-0585 ▀ ▀ 8800 34816 V8 ← V0
24A-24B 0586-0587 █ ▀ ▀ 8980 35200 V9 ← V8
24C-24D 0588-0589 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
24E-24F 0590-0591 █ ▄▀▀ ▀ 99A0 39328 Skip next if V9 <> VA
250-251 0592-0593 ▄ ▀▄▄▀ 128C 04748 Jump to win
252-253 0594-0595 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
254-255 0596-0597 ▄ █▄▄▀ 129C 04764 Jump to lose
256-257 0598-0599 ▄█ ▀ 1230 04656 Jump to again
258-259 0600-0601 █▄█▄ ▀ A2F0 41712 impotent I ← 0752
25A-25B 0602-0603 ▀▀ ▄ ▀ 6208 25096 V2 ← 008
25C-25D 0604-0605 ▀▀▄▀ ▄▄█ D127 53543 Draw 08×07 at V1,V2; VF ← XOR
25E-25F 0606-0607 ▄▄▄ ▄▄▄ 00EE 00238 Return
260-261 0608-0609 ▀▀ ▀▀▄ 6601 26113 random draw V6 ← 001
262-263 0610-0611 ▀▀ ▄ ▀▄ 6209 25097 V2 ← 009
264-265 0612-0613 ▀▀ ▄ 6001 24577 over V0 ← 001
266-267 0614-0615 ▀▀█▀▄ ▄ F029 61481 from I ← digit sprite of V0
268-269 0616-0617 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
26A-26B 0618-0619 ▀▀▀█▄▀▀ F618 63000 sound ← V6
26C-26D 0620-0621 ▀▀ ▄██ C307 49927 V3 ← ??? AND 007
26E-26F 0622-0623 ▀ ▀▀ 4300 17152 Skip next if V3 <> 000
270-271 0624-0625 ▄▄▄ ▄▄▄ 00EE 00238 Return
272-273 0626-0627 ▀▀▀ ▄ 7001 28673 V0 ← V0 + 001
274-275 0628-0629 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
276-277 0630-0631 ▀▀ ▄▄▄ 3007 12295 Skip next if V0 = 007
278-279 0632-0633 ▄▄▀ ▄█ 1266 04710 Jump to from
27A-27B 0634-0635 ▄▄▀ ▄▀ 1264 04708 Jump to over
27C-27D 0636-0637 ▀▀ ▄ ▀▄ 6209 25097 deal draw V2 ← 009
27E-27F 0638-0639 ▀▀ ▄ █ 6109 24841 V1 ← 009
280-281 0640-0641 ▀▀█▀▄▀▀█ F729 63273 I ← digit sprite of V7
282-283 0642-0643 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
284-285 0644-0645 ▀▀▄ ▄█ 6113 24851 V1 ← 019
286-287 0646-0647 ▀▀█▀█ ▄ F829 63529 I ← digit sprite of V8
288-289 0648-0649 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
28A-28B 0650-0651 ▄▄▄ ▄▄▄ 00EE 00238 Return
28C-28D 0652-0653 █ █ ▄▄▀ A2AC 41644 win I ← wi
28E-28F 0654-0655 ▀▀ 6000 24576 V0 ← 000
290-291 0656-0657 ▀▀▄ ▄ █ 6115 24853 V1 ← 021
292-293 0658-0659 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
294-295 0660-0661 █ █▄ ▀▄ A2B1 41649 I ← n
296-297 0662-0663 ▀▀ ▄ 6008 24584 V0 ← 008
298-299 0664-0665 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
29A-29B 0666-0667 ▄ █▄ █ 129A 04762 self Jump to self
29C-29D 0668-0669 █ █▄ ▄█ A2B6 41654 lose I ← lo
29E-29F 0670-0671 ▀▀ 6000 24576 V0 ← 000
2A0-2A1 0672-0673 ▀▀▄ ▀ 6110 24848 V1 ← 016
2A2-2A3 0674-0675 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2A4-2A5 0676-0677 █ █▄▄ █▄ A2BB 41659 I ← se
2A6-2A7 0678-0679 ▀▀ ▄ 6008 24584 V0 ← 008
2A8-2A9 0680-0681 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2AA-2AB 0682-0683 ▄ ▄▀▄ █ 12AA 04778 end Jump to end
2AC 0684 █ █ ██ 8B 139 wi
2AD 0685 █ █ █ 89 137
2AE 0686 █ █ █ 89 137
2AF 0687 █ █ █ █ A9 169
2B0 0688 ██ ██ ██ DB 219
2B1 0689 █ ██ █ B2 178 n
2B2 0690 ██ █ 32 050
2B3 0691 █ █ █ 2A 042
2B4 0692 █ ██ 26 038
2B5 0693 █ █ ██ A6 166
2B6 0694 █ ███ 8E 142 lo
2B7 0695 █ █ █ 8A 138
2B8 0696 █ █ █ 8A 138
2B9 0697 █ █ █ 8A 138
2BA 0698 ███ ███ EE 238
2BB 0699 ███ ███ EE 238 se
2BC 0700 █ █ 88 136
2BD 0701 ███ ██ EC 236
2BE 0702 █ █ 28 040
2BF 0703 ███ ███ EE 238The register usage is as follows:
The game begins by initializing register one, to parameterize the impotent routine, which doesn't do anything. It then halts until a key is pressed, but never uses the result:
200-201 0512-0513 ▀▀ ▄ ▀ 6108 24840 V1 ← 008
202-203 0514-0515 ▄▀▄▄ ▀ 2258 08792 Call impotent
204-205 0516-0517 ▀▀▄ ▄▀ 6112 24850 V1 ← 018
206-207 0518-0519 ▄▀▄▄ ▀ 2258 08792 Call impotent
208-209 0520-0521 ▀▀▀▀█▀█ FE0A 65034 VE ← keyThe game then uses register one to parameterize the random draw routine, storing the results in zero to registers seven and eight across two calls:
20A-20B 0522-0523 ▀▀ ▄ █ 6109 24841 V1 ← 009
20C-20D 0524-0525 ▄█ ▀ 2260 08800 Call random draw
20E-20F 0526-0527 ▀ ▀▀▀ 8700 34560 V7 ← V0
210-211 0528-0529 ▀▀▄ ▄█ 6113 24851 V1 ← 019
212-213 0530-0531 ▄█ ▀ 2260 08800 Call random draw
214-215 0532-0533 ▀ ▀ 8800 34816 V8 ← V0The sum of the two calls are stored into register nine and winning or losing is then determined from this in an obvious way, with fall-through otherwise:
216-217 0534-0535 █ ▀ ▀ 8980 35200 V9 ← V8
218-219 0536-0537 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
21A-21B 0538-0539 ▀ ▀ ▄▀ 4902 18690 Skip next if V9 <> 002
21C-21D 0540-0541 ▄ █▄▄▀ 129C 04764 Jump to lose
21E-21F 0542-0543 ▀ ▀ ▄█ 4903 18691 Skip next if V9 <> 003
220-221 0544-0545 ▄ █▄▄▀ 129C 04764 Jump to lose
222-223 0546-0547 ▀ █▄ ▀ 490C 18700 Skip next if V9 <> 012
224-225 0548-0549 ▄ █▄▄▀ 129C 04764 Jump to lose
226-227 0550-0551 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
228-229 0552-0553 ▄ ▀▄▄▀ 128C 04748 Jump to win
22A-22B 0554-0555 ▀ █ ▄█ 490B 18699 Skip next if V9 <> 011
22C-22D 0556-0557 ▄ ▀▄▄▀ 128C 04748 Jump to winThe previous sum is stored in register ten and a 64/60 second delay is entered:
22E-22F 0558-0559 █ ▄▀ ▀ 8A90 35472 VA ← V9
230-231 0560-0561 █▀ 6040 24640 again V0 ← 064
232-233 0562-0563 ▀▀▀█ ▄ ▄ F015 61461 delay ← V0
234-235 0564-0565 ▀▀▀▀ ▄▄▄ F007 61447 delay V0 ← delay
236-237 0566-0567 ▀▀ 3000 12288 Skip next if V0 = 000
238-239 0568-0569 ▄█ ▄▀ 1234 04660 Jump to delayAfterwards, the deal draw routine is called; another key is collected for a delay, but unused again; and two calls to random draw are made again, just as earlier:
23A-23B 0570-0571 ▄█▄▄▄▀ 227C 08828 Call deal draw
23C-23D 0572-0573 ▀▀▀▀█▀█ FE0A 65034 VE ← key
23E-23F 0574-0575 ▀▀ ▄ █ 6109 24841 V1 ← 009
240-241 0576-0577 ▄█ ▀ 2260 08800 Call random draw
242-243 0578-0579 ▀ ▀▀▀ 8700 34560 V7 ← V0
244-245 0580-0581 ▀▀▄ ▄█ 6113 24851 V1 ← 019
246-247 0582-0583 ▄█ ▀ 2260 08800 Call random draw
248-249 0584-0585 ▀ ▀ 8800 34816 V8 ← V0A sum is collected into register nine again and another table is used, with an identical sum to that previous resulting in a win and a sum of seven resulting in a loss, with fall-through leading to the earlier delay:
24A-24B 0586-0587 █ ▀ ▀ 8980 35200 V9 ← V8
24C-24D 0588-0589 ▀▄▄▄▀▄ ▀ 8974 35188 V9 ← V9 + V7; VF ← overflow
24E-24F 0590-0591 █ ▄▀▀ ▀ 99A0 39328 Skip next if V9 <> VA
250-251 0592-0593 ▄ ▀▄▄▀ 128C 04748 Jump to win
252-253 0594-0595 ▀ ▀▄▄█ 4907 18695 Skip next if V9 <> 007
254-255 0596-0597 ▄ █▄▄▀ 129C 04764 Jump to lose
256-257 0598-0599 ▄█ ▀ 1230 04656 Jump to againThe impotent routine draws a sprite from an unused memory location, achieving naught:
258-259 0600-0601 █▄█▄ ▀ A2F0 41712 impotent I ← 0752
25A-25B 0602-0603 ▀▀ ▄ ▀ 6208 25096 V2 ← 008
25C-25D 0604-0605 ▀▀▄▀ ▄▄█ D127 53543 Draw 08×07 at V1,V2; VF ← XOR
25E-25F 0606-0607 ▄▄▄ ▄▄▄ 00EE 00238 ReturnThe random draw routine begins by initializing registers six, two, and zero:
260-261 0608-0609 ▀▀ ▀▀▄ 6601 26113 random draw V6 ← 001
262-263 0610-0611 ▀▀ ▄ ▀▄ 6209 25097 V2 ← 009
264-265 0612-0613 ▀▀ ▄ 6001 24577 over V0 ← 001The zeroeth register iterates from zero to seven in this routine. Register zero's digit is shown; a sound of 1/60 of a second is played; and register three is given one of eight random values, leading to a 1/8 chance that the routine won't exit afterwards:
266-267 0614-0615 ▀▀█▀▄ ▄ F029 61481 from I ← digit sprite of V0
268-269 0616-0617 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
26A-26B 0618-0619 ▀▀▀█▄▀▀ F618 63000 sound ← V6
26C-26D 0620-0621 ▀▀ ▄██ C307 49927 V3 ← ??? AND 007
26E-26F 0622-0623 ▀ ▀▀ 4300 17152 Skip next if V3 <> 000
270-271 0624-0625 ▄▄▄ ▄▄▄ 00EE 00238 ReturnOtherwise, it continues by incrementing register zero, erasing the digit, and continues from the new value or restarts entirely, meaning it will loop between values one through six perhaps without end:
272-273 0626-0627 ▀▀▀ ▄ 7001 28673 V0 ← V0 + 001
274-275 0628-0629 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
276-277 0630-0631 ▀▀ ▄▄▄ 3007 12295 Skip next if V0 = 007
278-279 0632-0633 ▄▄▀ ▄█ 1266 04710 Jump to from
27A-27B 0634-0635 ▄▄▀ ▄▀ 1264 04708 Jump to overThe deal draw routine merely displays the two values of registers seven and eight, both of which are between one and six, inclusive:
27C-27D 0636-0637 ▀▀ ▄ ▀▄ 6209 25097 deal draw V2 ← 009
27E-27F 0638-0639 ▀▀ ▄ █ 6109 24841 V1 ← 009
280-281 0640-0641 ▀▀█▀▄▀▀█ F729 63273 I ← digit sprite of V7
282-283 0642-0643 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
284-285 0644-0645 ▀▀▄ ▄█ 6113 24851 V1 ← 019
286-287 0646-0647 ▀▀█▀█ ▄ F829 63529 I ← digit sprite of V8
288-289 0648-0649 ▀▀▄▀ ▄ █ D125 53541 Draw 08×05 at V1,V2; VF ← XOR
28A-28B 0650-0651 ▄▄▄ ▄▄▄ 00EE 00238 ReturnThe win routine displays the wi and n sprites before entering an infinite loop:
28C-28D 0652-0653 █ █ ▄▄▀ A2AC 41644 win I ← wi
28E-28F 0654-0655 ▀▀ 6000 24576 V0 ← 000
290-291 0656-0657 ▀▀▄ ▄ █ 6115 24853 V1 ← 021
292-293 0658-0659 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
294-295 0660-0661 █ █▄ ▀▄ A2B1 41649 I ← n
296-297 0662-0663 ▀▀ ▄ 6008 24584 V0 ← 008
298-299 0664-0665 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
29A-29B 0666-0667 ▄ █▄ █ 129A 04762 self Jump to selfThe lose routine is as for the win routine, but showing the lo and se sprites:
29C-29D 0668-0669 █ █▄ ▄█ A2B6 41654 lose I ← lo
29E-29F 0670-0671 ▀▀ 6000 24576 V0 ← 000
2A0-2A1 0672-0673 ▀▀▄ ▀ 6110 24848 V1 ← 016
2A2-2A3 0674-0675 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2A4-2A5 0676-0677 █ █▄▄ █▄ A2BB 41659 I ← se
2A6-2A7 0678-0679 ▀▀ ▄ 6008 24584 V0 ← 008
2A8-2A9 0680-0681 ▀▀ █ ▄ ▄ D015 53269 Draw 08×05 at V0,V1; VF ← XOR
2AA-2AB 0682-0683 ▄ ▄▀▄ █ 12AA 04778 end Jump to endThe game ends with the wi, n, lo, and se sprites; these are the only sprites in the game:
2AC 0684 █ █ ██ 8B 139 wi
2AD 0685 █ █ █ 89 137
2AE 0686 █ █ █ 89 137
2AF 0687 █ █ █ █ A9 169
2B0 0688 ██ ██ ██ DB 219
2B1 0689 █ ██ █ B2 178 n
2B2 0690 ██ █ 32 050
2B3 0691 █ █ █ 2A 042
2B4 0692 █ ██ 26 038
2B5 0693 █ █ ██ A6 166
2B6 0694 █ ███ 8E 142 lo
2B7 0695 █ █ █ 8A 138
2B8 0696 █ █ █ 8A 138
2B9 0697 █ █ █ 8A 138
2BA 0698 ███ ███ EE 238
2BB 0699 ███ ███ EE 238 se
2BC 0700 █ █ 88 136
2BD 0701 ███ ██ EC 236
2BE 0702 █ █ 28 040
2BF 0703 ███ ███ EE 238This game nicely performs a dice roll, but uses a loop which can strictly run indefinitely, and this is poor. A better approach would've been to sum six one-bit random integers; summing a two-bit with two one-bit random integers; or summing three three-bit random integers, and shifting this summation to the right twice, as three examples.