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Forum Index : Microcontroller and PC projects : Micromite EXTREME b2: double precision

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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10202
Posted: 03:30am 17 Nov 2016
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Geoff's underlying code in MMBasic is just extraordinary. I've just been able to convert all floating point arithmetic from single to double precision floating point (the PIC32MZ processor supports double precision in hardware) in less than 2 hours and half of that was finding all the instances of things like sinf() and changing them to the double precision version



This really does open up a whole new set of applications where accurate trigonometry is essential and because the calculations are done in hardware they will still be much faster than the single precision calcs on the MX470

The new beta also changes a number of pin allocations to better match both the MX470 and ELLO


2016-11-17_132940_MicromiteEXTREMEV5.2b2X.zip


E5 : 1 Analog / Digital / SSD1963-D5
E6 : 2 Analog / Digital / SSD1963-D6
E7 : 3 Analog / Digital / SSD1963-D7
G6 : 4 Analog / Digital / SPI2-CLK
G7 : 5 Analog / Digital / SPI2-OUT
G8 : 6 Console-RX / COM4-RX
7 VSS
8 3.3V
9 MCLR / 5V
G9 : 10 Analog / Digital / PWM-1C
B5 : 11 Analog / Digital / COM2-TX
B4 : 12 Analog / Digital
B3 : 13 Analog / Digital / COM2-RX
B2 : 14 Analog / Digital / COM1-TX
B1 : 15 Analog / Digital / COM1-EN
B0 : 16 Analog / Digital / COM3-TX
B6 : 17 Analog / Digital / COM3-RX
B7 : 18 Analog / Digital / COM1-RX
19 : AVDD
20 : AVSS
B8 : 21 Analog / Digital / COM3-RX
B9 : 22 Analog / Digital
B10 : 23 Analog / Digital / COUNT
B11 : 24 Analog / Digital / SSD1963-WR
25 VSS
26 VDD
B12 : 27 Analog / Digital / SSD1963-RS
B13 : 28 Analog / Digital / SSD1963-RESET
B14 : 29 Analog / Digital / PWM-1B
B15 : 30 Analog / Digital / PWM-2B
31 Oscillator 12MHz
C15 : 32 Digital
33 USB-VBUS
34 USB-VUSB
35 VSS
36 USB-D-
37 USB-D+
F5 : 38 Digital
39 VDD
40 VSS
F4 : 41 Digital / 5V / KYBD-CLK
F5 : 42 Digital / 5V / KYBD-DAT
D9 : 43 Digital / 5V / I2C-SDA
D10 : 44 Digital / 5V / I2C-SCK
D11 : 45 Digital / 5V / SPI1-OUT
D0 : 46 Digital / 5V / COUNT
C13 : 47 Digital / SPI2-IN
C14 : 48 Digital / PWM-1A
D1 : 49 Digital / 5V / SPI1-CLK
D2 : 50 Digital / 5V / SPI1-IN
D3 : 51 Digital / 5V / COUNT
D4 : 52 Digital / 5V / COUNT
D5 : 53 Digital / 5V / PWM-2A
54 VDD
55 VSS
F0 : 56 5V / Console-TX / COM4-TX
F1 : 57 Digital / 5V
E0 : 58 Digital / 5V / SSD1963-D0
59 VSS
60 VDD
E1 : 61 Digital / 5V / SSD1963-D1
E2 : 62 Digital / 5V / SSD1963-D2
E3 : 63 Digital / 5V / SSD1963-D3
E4 : 64 Digital / 5V / SSD1963-D4
 
WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2932
Posted: 03:44am 17 Nov 2016
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VGA by the end of the week then?
 
WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2932
Posted: 03:55am 17 Nov 2016
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Peter,

Is it safe to assume that the ICSP, power pins, and Oscillator pins will remain constant?

Also the Console. I see that Rx has just changed to better match things. Do you think it is likely to change again on the 64pinner MZ OR is it too early to say?

Amazing work from all involved.
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10202
Posted: 04:11am 17 Nov 2016
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  Quote  Is it safe to assume that the ICSP, power pins, and Oscillator pins will remain constant?




Actually because we are using an external oscillator rather than a crystal pin 32 is available as a digital I/O pin

  Quote  Do you think it is likely to change again on the 64pinner MZ OR is it too early to say?


No. The history is that it should have been 56 and 57 on the MX470 but 57 wouldn't work on that hardware so we had to go to 6.

57 does work on the MZ but I've been beaten up by Kiiid to revert to the MX configuration

Irrespective of ELLO, he is probably correct anyway in terms of relaying the various MX470 PCBs as simply as possible
 
kiiid

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Joined: 11/05/2013
Location: United Kingdom
Posts: 671
Posted: 04:17am 17 Nov 2016
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  matherp said  
57 does work on the MZ but I've been beaten up by Kiiid to revert to the MX configuration


Sorry
I really appreciate that and it will be best for the end user so we don't end up with two incompatible ports (PS. yes, although not announced officially, there are two ports as of today)
http://rittle.org

--------------
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4034
Posted: 04:29am 17 Nov 2016
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Looking good.

People who don't use C much often go on about how bad it is, yet here we see that isn't so if it's decently written.

John
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10202
Posted: 07:18am 17 Nov 2016
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One final version for the moment. The pinout is now completely agreed with kiiid and should be stable. The changes are in COM1 and PWM2a
I've also implemented the true random number generator that is a new part of the MZ chip

I've ordered a SnadPic PCB for the PIC32MZ2048EFH100 and will check out the code on that before going much further.

2016-11-17_192648_MicromiteEXTREMEV5.2b4X.zip

E5 : 1 Analog / Digital / SSD1963-D5
E6 : 2 Analog / Digital / SSD1963-D6
E7 : 3 Analog / Digital / SSD1963-D7
G6 : 4 Analog / Digital / SPI2-CLK
G7 : 5 Analog / Digital / SPI2-OUT
G8 : 6 Console-RX / COM4-RX
7 VSS
8 3.3V
9 MCLR / 5V
G9 : 10 Analog / Digital / PWM-1C
B5 : 11 Analog / Digital / COM2-TX
B4 : 12 Analog / Digital
B3 : 13 Analog / Digital / COM2-RX
B2 : 14 Analog / Digital / COM1-EN
B1 : 15 Analog / Digital / COM1-TX
B0 : 16 Analog / Digital / COM3-TX
B6 : 17 Analog / Digital / COM3-RX
B7 : 18 Analog / Digital
19 : AVDD
20 : AVSS
B8 : 21 Analog / Digital
B9 : 22 Analog / Digital
B10 : 23 Analog / Digital / COUNT
B11 : 24 Analog / Digital / SSD1963-WR
25 VSS
26 VDD
B12 : 27 Analog / Digital / SSD1963-RS
B13 : 28 Analog / Digital / SSD1963-RESET
B14 : 29 Analog / Digital / PWM-1B
B15 : 30 Analog / Digital / PWM-2B
31 Oscillator 12MHz
C15 : 32 Digital
33 USB-VBUS
34 USB-VUSB
35 VSS
36 USB-D-
37 USB-D+
F5 : 38 Digital
39 VDD
40 VSS
F4 : 41 Digital / 5V / KYBD-CLK
F5 : 42 Digital / 5V / KYBD-DAT
D9 : 43 Digital / 5V / I2C-SDA
D10 : 44 Digital / 5V / I2C-SCK
D11 : 45 Digital / 5V / SPI1-OUT
D0 : 46 Digital / 5V / COUNT
C13 : 47 Digital / SPI2-IN
C14 : 48 Digital / PWM-1A
D1 : 49 Digital / 5V / SPI1-CLK
D2 : 50 Digital / 5V / SPI1-IN
D3 : 51 Digital / 5V / COUNT
D4 : 52 Digital / 5V / COUNT
D5 : 53 Digital / 5V / PWM-2A
54 VDD
55 VSS
F0 : 56 5V / Console-TX / COM4-TX
F1 : 57 Digital / 5V / COM1-RX
E0 : 58 Digital / 5V / SSD1963-D0
59 VSS
60 VDD
E1 : 61 Digital / 5V / SSD1963-D1
E2 : 62 Digital / 5V / SSD1963-D2
E3 : 63 Digital / 5V / SSD1963-D3
E4 : 64 Digital / 5V / SSD1963-D4Edited by matherp 2016-11-18
 
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