And can I just say that Ken completing his NEC PC-8201A fully commented disassembly is absolutely amazing! Thank you, Ken, for your diligence. The help this will give me on filling in the gaps in my Memory Map Database is huge.
On Thu, Feb 23, 2023 at 7:09 AM Stephen Adolph <twospru...@gmail.com> wrote: > thanks Ken, this is very helpful. I never like to quit something that is > part way done, so I'll take a look at it again. > Right now I am part way through the MVT100 PC terminal app, going well. > > On Thu, Feb 23, 2023 at 12:11 AM Kenneth Pettit <petti...@gmail.com> > wrote: > >> Hey Steve, >> >> I don't know if you are still trying to get SuperROM ported to PC-8201 >> or not, but I have merged in all of my M100 disassembly comments into >> the PC-8201 disassembly and was able to find *most* of the calls you >> identified below. >> >> Note however the following: >> >> 1. The encoding for floating point numbers in PC-8201 is TOTALLY >> different than M100. >> 2. Most of the routines in PC-8201 are using SGL precision vs. DBL in >> M100 >> 3. Three of the routines aren't available and would have to be dealt >> with in some other way. >> >> Ken >> >> On 2/18/23 12:07 PM, Stephen Adolph wrote: >> > If there is anyone motivated to help, It would be helpful to figure >> > out the equivalent calls PC-8201 calls for this list of M100 main ROM >> > calls. >> > >> > 0x30C2 -> NON EXISTENT ( Load FAC1 with zero). Could use: LXI B, >> > 0000H CALL 0x3DF7 >> > 0x31B5 -> 0x321E ( Copy FAC1 to FAC2 ) >> > 0x31B8 -> 0x3218 ( Copy floating point at M to FAC1 ) NOTE: DBL in >> > M100, type of last var in PC-8201 >> > 0x31BB -> NON EXISTENT ( Move floating point at M to (DE) ) >> > 0x31C1 -> 0x3215 ( Copy FAC2 to FAC1 ) >> > 0x31C4 -> 0x31D0 ( Move floating point at M to FAC1) NOTE: DBL in >> > M100, SGL in PC-8201 >> > 0x31CA -> 0x31EA ( Move FAC1 to M) NOTE: DBL in M100, SGL in PC-8201 >> > 0x31CD -> 0x31ED ( Move floating point at (DE) to M ) NOTE: DBL in >> > M100, SGL in PC-8201 >> > 0x3469 -> 0x31F7 ( Move B bytes from (DE) to M with increment ) >> > 0x3472 -> NON EXISTENT ( Move B bytes from (DE) to M with decrement ) >> > 0x34D2 -> 0x326F ( Double precision compare FAC1 with FAC2 ) >> > 0x3501 -> 0x329E ( CINT function ) >> > 0x3510 -> 0x32BA ( Load signed integer in HL to FAC1 ) >> > 0x3513 -> 0x32BD ( Set type of last variable to INT ) >> > 0x35BA -> 0x32FC ( CDBL function ) >> > 0x35CF -> 0x330D ( Set type of last variable to DBL ) >> >>
