# RC2014 Cards # RC2014 Cards Resources - [https://hackaday.io/project/159057-game-boards-for-rc2014](https://hackaday.io/project/159057-game-boards-for-rc2014) - https://www.youtube.com/watch?v=1K\_cc8wFURc - [TMS9918A](https://en.wikipedia.org/wiki/TMS9918) based video card - [SN76489](https://en.wikipedia.org/wiki/Texas_Instruments_SN76489) based sound card - [https://www.tindie.com/stores/mfkamprath/](https://www.tindie.com/stores/mfkamprath/) - [ESP8266 Wifi Module For RC2014](https://www.tindie.com/products/semachthemonkey/esp8266-wifi-module-for-rc2014/) - [ DS1302 Real Time Clock Module for RC2014](https://www.tindie.com/products/semachthemonkey/ds1302-real-time-clock-module-for-rc2014/) # Quazar OLED interface [![quazar_oled.jpg](https://wiki.hexadust.net/uploads/images/gallery/2024-11/scaled-1680-/sskD0kfwZ5sEBVkC-quazar-oled.jpg)](https://wiki.hexadust.net/uploads/images/gallery/2024-11/sskD0kfwZ5sEBVkC-quazar-oled.jpg) Official site: [https://2014.samcoupe.com/#graphicoled](https://2014.samcoupe.com/#graphicoled) Based on SSD1305 OLED display (128x32 version?): [SSD1305.pdf](https://wiki.hexadust.net/attachments/40) Uses `0x50` I/O port by default (fully configurable). I/O decoder uses [74HCT02](https://wiki.hexadust.net/books/electronics/page/chips#bkmrk-sn74hct02) NOR gates and [74GCT688](https://wiki.hexadust.net/books/electronics/page/chips#bkmrk-cd74hct688) 8-bit comparator. The SSD1305 chip is placed behind two [74HCT573](https://wiki.hexadust.net/books/electronics/page/chips#bkmrk-snx4hct573 "74HCT573") 8-bit latches so it can be timed slower than Z80 bus: - One latch takes 8 bit data bus and forwards to the OLED chip. - The other latch takes 3 control bits from higher address buss byte as output from B register. - Latches take input on I/O bus write when base address matches. - Compactor is enabled when RW and IORQ are active (low). - If address matches the I/O address select the latches will copy and store data from data bus and first 3-bits from high address byte. - The latched data is presented to OLED until the next I/O write to the card occurs. ## Software I have implemented a program to display images using instructions form provided manual: - [rc2014-oled](https://gitea.hexadust.net/hxd/rc2014-oled) - `oled` program for CP/M and PNG image converter. # Quazar SID Interface ## SID Programming - [https://www.c64-wiki.com/wiki/SID](https://www.c64-wiki.com/wiki/SID) - [MOS6581\_SID\_data\_sheet.pdf](https://wiki.hexadust.net/attachments/98) [![1000013963.png](https://wiki.hexadust.net/uploads/images/gallery/2025-10/scaled-1680-/WKRcb1sNtAWNH5vf-1000013963.png)](https://wiki.hexadust.net/uploads/images/gallery/2025-10/WKRcb1sNtAWNH5vf-1000013963.png) ## Memory Addresses of the SID
**Reg****Function**
0frequency voice 1 low byte
1frequency voice 1 high byte
2pulse wave duty cycle voice 1 low byte
7..43..0
3—pulse wave duty cycle voice 1 high byte
4control register voice 1
76543210
noisepulsesawtoothtriangletestring modulation with voice 3synchronize with voice 3gate
7..43..0
5attack durationdecay duration voice 1
6sustain levelrelease duration
7frequency voice 2 low byte
8frequency voice 2 high byte
9pulse wave duty cycle voice 2 low byte
7..43..0
10—pulse wave duty cycle voice 2 high byte
11control register voice 2
76543210
noisepulsesawtoothtriangletestring modulation with voice 1synchronize with voice 1gate
7..43..0
12attack durationdecay duration voice 2
13sustain levelrelease duration voice 2
14frequency voice 3 low byte
15frequency voice 3 high byte
16pulse wave duty cycle voice 3 low byte
7..43..0
17—pulse wave duty cycle voice 3 high byte
18control register voice 3
76543210
noisepulsesawtoothtriangletestring modulation with voice 2synchronize with voice 2gate
7..43..0
19attack durationdecay duration voice 3
20sustain levelrelease duration voice 3
21—filter cutoff frequency low byte
22filter cutoff frequency high byte
23filter resonance and routing
7..43210
filter resonanceexternal inputvoice 3voice 2voice 1
24filter mode and main volume control
76543..0
mute voice 3high passband passlow passmain volume
25paddle x value (read only) - not available
26paddle y value (read only) - not available
27oscillator voice 3 (read only) - not available
28envelope voice 3 (read only) - not available
### Envelopes [![sidadsr.gif](https://wiki.hexadust.net/uploads/images/gallery/2025-11/KBzCCgvq6NhBnvwF-sidadsr.gif)](https://wiki.hexadust.net/uploads/images/gallery/2025-11/KBzCCgvq6NhBnvwF-sidadsr.gif)
**Value**
**Attack Rate**
**Decay/Release Rate**
Decimal(Time/Cycle)(Time/Cycle)
02 mS6 mS
18 mS24 mS
216 mS48 mS
324 mS72 mS
438 mS114 mS
556 mS168 mS
668 mS204 mS
780 mS240 mS
8100 mS300 mS
9250 mS750 mS
10500 mS1.5 S
11800 mS2.4 S
121 S3 S
133 S9 S
145 S15 S
158 S24 S
### Frequency ``` \ Frequency table: : SID:NOTE:C4 4389 ; : SID:NOTE:C4# 4650 ; : SID:NOTE:D4 4927 ; : SID:NOTE:D4# 5220 ; : SID:NOTE:E4 5530 ; : SID:NOTE:F4 5859 ; : SID:NOTE:F4# 6207 ; : SID:NOTE:G4 6577 ; : SID:NOTE:G4# 6968 ; : SID:NOTE:A4 7382 ; : SID:NOTE:A4# 7821 ; : SID:NOTE:B4 8286 ; \ Octave shifts : SID:OCT:UP 2* ; : SID:OCT:DOWN 2/ ; ``` ## Using with RC2014 Mini II Picasso [![rc2014-sid-picasso.jpg](https://wiki.hexadust.net/uploads/images/gallery/2025-10/scaled-1680-/CtuuwXAQ5rxqZeN2-rc2014-sid-picasso.jpg)](https://wiki.hexadust.net/uploads/images/gallery/2025-10/CtuuwXAQ5rxqZeN2-rc2014-sid-picasso.jpg) ### Limitations - Interrupt timer won't work since first half of memory is ROM and can't install interrupt handler. This will work with CP/M cards where all memory space is backed by RAM. - It is not possible to read data from SID chip. Paddled and voice 3 data and ADSR registers cannot be read. ### Basic Set ROM address to `0 100` (just *Bank 2* set) to boot into *Microsoft BASIC (Phil Green)*. Insert SID interface card: marked `A15` pin is pin 1. Use the following test BASIC program (as provided in the instructions): ```vbscript 10 DATA 205,7,10,123,66,14,84,237,121 20 DATA 0,0,0,203,248,237,121,195,125,17 30 FOR A=-1024 TO -1006 40 READ D 50 POKE A,D 60 NEXT A 70 POKE -32695,0 80 POKE -32694,252 90 LET A=USR(1024) 100 LET A=USR(6159) 101 LET A=USR(1280) 102 LET A=USR(1776) 103 LET A=USR(1041) 110 FOR D=256 TO 511 120 LET A=USR(D) 130 NEXT D 140 GOTO 110 ``` Type `RUN` to start it. You should hear "siren" audio effect. ### CamelForth Set ROM address to `0 001` (just *Bank 8* set) to boot into *CamelForth (Justin Skists)*. Paste following Forth program. ``` \ PS2! c c p-addr -- Data byte (A), high address byte (B), port address (C) - OUT to port with A and B registers set : PC2! SWAP >< OR PC! ; \ SID! c c -- Data value, register (0-31); bits 5,6 are for interrupt settings; bit 7 (/CS) is handled : SID! 2DUP 128 OR 84 PC2! 2DUP 127 AND 84 PC2! 128 OR 84 PC2! ; : SIDRST 0 24 SID! 0 4 SID! ; : SIDTEST 15 24 SID! 10 0 DO 255 0 DO I 1 SID! LOOP LOOP 0 24 SID! ; SIDRST 15 24 SID! 0 5 SID! 240 6 SID! 17 4 SID! SIDTEST ``` Decimals used: - 84 = 0x52 - I/O port number - 24 = 0x18 register 0x18 (24), no interrupt - 128 - high bit set - 127 - all but high bit set See project page for CamelForth SID library: [sid.4th](https://gitea.hexadust.net/hxd/rc2014-sid/src/branch/main/sid.4th)