Need for speed - the ROM-patches

Anything Sinclair ZX Basic related; history, development, tips - differences between BASIC on the ZX80 and ZX81
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zsolt
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Re: Need for speed - the ROM-patches

Post by zsolt »

Hi Siggi,
Over the past few months I did not deal with this problem, but I spent a lot of time writing and testing new arithmetic routines.
They are now faster and a bit smaller :!: coming soon. :D
Regards,
Zsolt
ZX81 (8K), ENTERPRISE 128, [ZX SPECTRUM (48K,+,+128K,+2,+2A), TS1000, TS1500, TS2068, Cambridge Z88, PRIMO A64 (red)]
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zsolt
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Joined: Wed Apr 20, 2011 11:43 am
Location: Fót, Hungary

Re: Need for speed - the ROM-patches

Post by zsolt »

Hi,

I built a new ROM image using the renewed arithmetics and a little patch in the 'NEXT' routine. :D :D :D
ClckFreq.p (performed on sz81)
ClckFreq.p (performed on sz81)
SG81F_BN.png (4.7 KiB) Viewed 5078 times
Enjoy,
Zsolt
Attachments
SG81F_ROM.ZIP
(75.09 KiB) Downloaded 331 times
ZX81 (8K), ENTERPRISE 128, [ZX SPECTRUM (48K,+,+128K,+2,+2A), TS1000, TS1500, TS2068, Cambridge Z88, PRIMO A64 (red)]
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Andy Rea
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Re: Need for speed - the ROM-patches

Post by Andy Rea »

very nice work indeed... i should with this ROM be able to break the 1000% speed increase barrier with my 20Mhz uber zeddy.. best to date is 960%

regards Andy
what's that Smell.... smells like fresh flux and solder fumes...
Moggy
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Re: Need for speed - the ROM-patches

Post by Moggy »

Andy Rea wrote: Thu Apr 05, 2018 5:23 pm very nice work indeed... i should with this ROM be able to break the 1000% speed increase barrier with my 20Mhz uber zeddy.. best to date is 960%

regards Andy
Will this uber zeddy speed up ZXChess on level 5 ? :lol:
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Andy Rea
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Re: Need for speed - the ROM-patches

Post by Andy Rea »

wow... the fastest Zeddy in the west !
Image

regards Andy
what's that Smell.... smells like fresh flux and solder fumes...
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Andy Rea
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Re: Need for speed - the ROM-patches

Post by Andy Rea »

Holy moly Zsolt does it again ! viewtopic.php?f=5&t=2986

This doesn't just surpass the old record it absolutely ate it, swallowed it, and spat it out, before trampling all over it ! almost half as fast again !

Image
what's that Smell.... smells like fresh flux and solder fumes...
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