This repo is a documented copy of the Speak & Spell TMS1000 source code as seen in US patent #4189779. Most of the original comments were copied and many more were added with clarifications.
Also provided are maps for ROM (cartridges), RAM and I/Os.
Ce repo est une copie documentée du code source TMS1000 du brevet US #4189779 sur la Dictée Magique de Texas Instruments. La plupart des commentaires d'origine ont ete recopiés et de nombreux autres ont ete ajoutés.
Une carte de la ROM (cartouches), de la RAM et des E/Ss est aussi fournie.
| Label | Page # | Description |
|---|---|---|
| OFF | Page 0 | Turns power off by suicide |
| ADDCARRY | Page 0 | Add A to RAM with carry propagation |
| CLEAR | Page 1 | Clear display buffer and set cursor at position 0 |
| CURLEVL | Page 5 | Init ROM address in RAM to 0 |
| NOTFULL | Page 1 | Puts keycode in 0,14/0,15 in display buffer, increments cursor pos and BL to NO$TRANS |
| MEMADDR | Page 10 | Address ROM |
| OUTADDR2 | Page 7 | Get 4 bits from ROM in A |
| F-SCORE | Page 1 | Called with A=number of words tried ? |
| START | Page 15 | Entry point |
| DIFFSLY | Page 4 | Displays SPELL IT/SAY IT and difficulty level |
| MEMDRED | Page 10 | Dummy ROM read |
| TONES | Page 11 | Plays 4 tones (4 random sequences possible) |
| ADDCTR6 | Page 4 | BL from TONES, reads pointer and starts speaking |
| ADDWDS2 | Page 14 | Address ROM and starts speaking... |
| SPKREG | Page 14 | |
| SPKREG+1 | Page 14 | Read synth statys, branch to BITSET0 when synth is talking (talk status = 1) |
| BITSET0 | Page 14 | Goes directly to DISP/KB |
| DISP/KB | Page 15 | Reset timeout counter 2 MSBs, reset debounce counter, goes into DSP1...... |
To do...
DSP1 Page 15 Reset R-line counter, goes into DSP2... | DSP2 Page 15 Load output PLA for character display Y, turn on corresponding R line, BL to TIMEUP | TIMEUP Page 0 Check for key press, if yes CAR2, if not continue to... | TIMEUP1 Page 0 inc timeout counter (3,8), RETN if called, turns off if counter > 3FFFF else CAR1 (X=0 and BL to DISP/KB1) | DISP/KB1 Page 15 Increment R-line counter, turn off last one, check if 8 characters done. No : BL to DSP2, Yes : turn off filament, | call to TIMEUP1 | Increment debounce counter, limit to F | If disp loop counter < 10, go to DSP1 | Test talk flag in (3,15), SPKREG+1 if speaking | DISPL+1 if bit 0 of (3,14) = 1 | Else DSP1 | DISPL+1 Page 8 KEYSEVL Page 15 Process key press A=keycode LSB, branches to... KEY1 Page 13 Handle keycode 1,xx KEY00 Page 13 Handle keycode 0,xx ROM Page 7 Module switch ? Adds 8 to (8,6) REPEAT Page 10 Copy DAM ROM address to page 1 ROM address and speak FILSLOOP Page 15 Fills RAM with A (dec Y) RANDOM Page 5 RCOMX8 Y=(8,0) COMX8 Y=(8,Y) SETBIT1 Page 10 Sets (8,2).1=1 ADDCTR6 Page 4 MEMADDR + LOADRESS + Speak it