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RP06: some bit clearing

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Folkert van Heusden 2024-06-13 00:31:03 +02:00
parent 4411d4d1bc
commit 90f0b61a77
Signed by untrusted user who does not match committer: folkert
GPG key ID: 30190E8C1F28D8AE
1 changed files with 6 additions and 1 deletions
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7
rp06.cpp
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@ -75,6 +75,7 @@ uint16_t rp06::read_word(const uint16_t addr)
uint16_t value = registers[reg]; uint16_t value = registers[reg];
TRACE("RP06: read \"%s\"/%o: %06o", regnames[reg], addr, value); TRACE("RP06: read \"%s\"/%o: %06o", regnames[reg], addr, value);
printf("RP06: read \"%s\"/%o: %06o\r\n", regnames[reg], addr, value);
return value; return value;
} }
@ -149,11 +150,15 @@ void rp06::write_word(const uint16_t addr, uint16_t v)
registers[reg] = v; registers[reg] = v;
if (addr == RP06_CS1) { if (addr == RP06_CS1) {
if (registers[reg_num(RP06_CS1)] & 0200) // ready
registers[reg_num(RP06_AS)] = 1; // this is very bogus but maybe works for now
if (v & 1) { if (v & 1) {
bool generate_interrupt = false; bool generate_interrupt = false;
int function_code = v & 62; int function_code = v & 62;
registers[reg_num(RP06_CS1)] &= ~(function_code | 1 | 040000);
if (function_code == 006 || function_code == 012 || function_code == 016 || if (function_code == 006 || function_code == 012 || function_code == 016 ||
function_code == 020 || function_code == 022) { function_code == 020 || function_code == 022) {
DOLOG(debug, false, "RP06: ignoring command %03o", function_code); DOLOG(debug, false, "RP06: ignoring command %03o", function_code);